This kinda of thing is hard to do because of our different regions and the different skill levels with our respective players with their respective characters. So I can only base this off of my personal experiences, naturally.
+3: Ganon, Charizard, DDD
+2: DK, Bowser, ROB, Wario
+1: Ivy, Samus, Pikachu, Snake, Zelda
0.5: Yoshi, Pit, Ike, Metaknight, Marth
0: Mario, Sonic, Lucario, Link, Peach
0.5: Jiggs, Squirtle, Icy's, Toon Link
-1: Roy, G&W, Diddy, Lucas, Luigi
-2: Kirby, Falcon
-3: Shiek
-4: Falco
-5: Wolf, Fox
A few notes:
Ganon is so high on the ease list because while the big-body chars are slow, they at least have range and large disjoints or armor to deal with faster foes. Ganon lacks the speed as well as any large sword/tail/hammer or armor, so ZSS can pretty much run circles around him and basically choose when she wants to go in.
Squirtle is slightly on the negative side because we've all agreed that the MU is "awkward". I can't considering something that feels "awkward" even. Anything that makes you feel uncomfortable is a disadvantage. She can combo him just fine, once she finally pops him up, but popping him up can be the hard part.
My placings for Marth and Ike may admittedly be very bias, because I consistently beat both SparkingZero (Ike) and Dizzy (Marth) with ZSS. But Marth is at a perfect combo weight for Marth and she gets free laser pokes on him. Her lasers neutralize Ike's QuickDraw game and she can snipe Ike out of Aether with F-Smash (it requires good timing but I constantly do it to Sparking). A divekick edgeguard usually means death for both characters as well (unless the Marth uses extremely good DI; Ike is done.)
Falco is below Wolf and Fox simply because he is easier to gimp; I agree with his placing.
Although ZSS beats Marth, Roy beats her due to his stronger punish game and CC + D-tilt. ZSS is a very weak character against CC. Roy is the pioneer of CC counters.
Falcon's rough, yeah, but I wouldn't put him on -3 tier due to his terrible, easy-to-read tech roll, and her ability to Up-Air him off-stage with ease. We know ZSS doesn't get much off of throws, but on Falcon, they're actually pretty effective. And of course he's easy to gimp.
Metaknight is actually in ZSS's favor, because comboing him is extremely free, especially with Dair. His light-ness makes Dair -> Bair kills effortless, and with no projectile and a trans sword, he can't swipe her lasers.
Don't remember why I put ganon at +1, he's definitely better than that. However, I wouldn't say he's anywhere near as easy as DDD or charizard just because of combo weight (also, ganon has a better neutral against zss than ddd or zard imo). You guys keep saying random characters are the "perfect combo weight" but are just flat out wrong. Charizard and D3 are the perfect combo weight. If you get them off the ground, it's just over. Nair string into whatever the hell you want. Also, not sure why I put D3 at +2 instead of +3. Bowser is also +2 now. I felt like I was just playing the matchup wrong, but the more I think about it, it is just so damn hard to get him off the ground, and he has so many quick powerful options that one read by bowser is stock. Once you do get him off the ground though... rip
One last fight for marth. I really just don't see how you guys keep saying marth is the perfect combo weight. He's very light and pretty floaty. ZSS likes heavy floaties the best, then midweight semifloaties, then light slightly less semifloaties, then pretty light semifloaties. Marth's combo weight is fine, but it's nowhere near as free as it is against fatties or even as good as peach. Also, edguarding marth isn't that easy if marth knows what he is doing. Divekick is very telegraphed and marth's side-b covers so far above him, as long as he doesn't side-b for no reason, zss shouldn't be able to divekick unless he is forced to use side-b to make it to stage. You can still edgeguard him the normal way, but it's not free kills. Marth, on the other hand, gets free kills of zss. His bair is completely free against zss once she has to tether ledge. If you fade back, ledgehop bair kills you so you have to go forward and just keep getting knocked back off and hop he messes up. I also think marth wins the neutral pretty hard because he is about as mobile with an insane priority advantage and dat dtilt and grab range. You have blaster, but he has the best tools to clank it as well as a big shield and a great wavedash oos. Main problem I have with the matchup overall is that spaced bair is almost useless against marths fairs and you can't ever cross up his shield or space dtilt/dsmash on his shield. As for ike, I wouldn't say blaster neutralizes quickdraw at all. Quickdraw is mostly used to just extend punishes, and he can just short hop over while charging quickdraw anyhow. Now that we can't DC, he can actually punish blaster.
While she has an ok punish game on falcon, I don't think he's quite so easy to edgeguard. Falcon's up-b often armors through divekick and makes me want to tear my hair out, and his side-b is only punishable if you read it if he does it correctly. Certainly an easy character to edgeguard, but I don't think zss is particularly terrific at it. Most characters can gimp falcon pretty well and yet he is still super duper good. The problem is that it's almost impossible to grab a good falcon and having low disjoint (you know, on moves that are fast enough to matter) and no lingering hitboxes, it's hard to knock him over. He also has an insane punish game on you. You can recovery easily against him, but it doesn't matter because you died to knee at 60%.
I agree with the lasers against mk, he does have poor options to deal with them, and I think it's one of the only matchups zss likes FD on. However, mk is NOT a good combo weight. On DI down and away, he can get out of any type of strings with upair or nair. Only combo starters that work against him are dair and dsmash, but those are VERY hard to hit on a good MK. Good luck consistently landing dair on a really fast character his insanely quick and disjointed moves that cover his head. Also, mk nair covers fadeback for free and also hits fade forward so recovering against MK is actually impossible past around 100%and until then you have to eat nairs OR if he reads fade forward he can bair you off stage. He can probably just nair fade back on reaction while bairing you anytime you fade forward and idk if you can even amsa tech it.
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D.C.L Think about the matchup in a world where you aren't approaching zelda. You just sit at long range and spam blasters, and yes, she can reflect one but that does nothing because it just reflects it into another blaster. When she tries to approach, zss can wall her out with spaced bairs and then only way through is dash attack. However, if zss dodges that zss can start a good combo string and put zelda in the air where zss can up-b her back to stage and get a tech chase and repeat. That's basically how the matchup plays.
Also, things you were wrong about.
1. Floaty means impossible to combo- Nope, you just have to nair string her with very tight inputs and switch to backwards nairs when she gets high enough in the air.
2. Free edgeguards with dins. Zelda's kill moves send you fairly high, so you usually don't have to tether stage to recovery. Even if you do, zss will often go through dins, but if you get hit, you can just retether anyway as dins has basically no knockback.
Basically, zelda has a really low skill floor and zss has a really high skill floor. You need really good movement and shffling to unlock any of zss's good options where zelda's options are mostly all pretty basic in terms of tech. The better both players get, the more the matchup favors zss.
Yall think we beat ivy?? Maybe i just suck at the mu but bair kinda beats everything zss have imo. And ivy is a ...... to approach.
I dont get bodied by ivys by any means. But more often then not i end up loosing cause i can't close out that last stock against ivy. Last 3 pm tournaments i've been in i lost to a ivy game 3. Would love to know what im doing wrong.
Yeah, you can't beat ivy bair, but nobody can directly. You have to play around ivy's poor mobility. Funny thing is, zss actually can kinda beat it out with fmsmash if you see it coming and dash away pivot fsmash. Ivy is also a good combo weight for nair chains, and of course ivy tether is a free fair. To approach just spam blaster, it trades with razor leaf and is much more spammable.