I feel like posting a top 10 tier list because... because discussion. Fight me.
I'll even explain placings
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Now, before you get up in arms, I just want to say that I think the gap between ZSS and Sheik is very small. But I do think ZSS is the best fighter in the game.
Basically, this fighter is absurd in every way. She has the best "omg get me out of here" move comboed with the best spike in the game. The best vertically killing move in the game that is also a frame 4 upb meaning it is a completely nuts oos option. One of the best dash grabs in the game that flows into one of the best combo games possessed by any fighter. Completely insane safety on block with spacing (and combo hit confirm!!!) aerials thanks to recent shield changes. The only thing she lacks is an air to ground rising aerial, which I personally feel is more than made up for by the rest of her kit.
She is either extremely oppressive towards or invalidates a solid chunk of the cast.
The thing is with this fighter, is she has an attribute that only 3 fighters in this game have, she can completely invalidate her own matchup spreads by killing you before your gameplan is even relevant. Her hardest matchups are Sheik and Mario, but what does it really matter if you make a random mistake against her and die to an up air combo or a setup into her spike?
Honestly, what can I say about this fighter that hasn't already been said. she really good
This placement isn't controversial either. she good
I see a lot of differing opinions on this fighter, mainly whether or not he's good enough to be top 5. I would say he definitely is. Mario's gameplan works against every fighter in the game, all while having not a single bad matchup. Amazing frame data + damage, really good combo game, and the results at nationals to even secure this placing. He's a shoe-in for me.
This fighter is already doing some pretty gnarly stuff, and damn I expect him to rise honestly as he gets more optimized. I don't think there's much debate that this fighter is top 5, if there is then go ahead and voice it. yay discussion
NOT BIAS LOL
This fighter is super good. He'll consistently kill you between 10-45% if you let him confirm on you, and with rage he gets even more insane, MK has imo the second best comeback ability in this game behind Lucario, you can body him all game and he can just rage combo you two stocks in a row. MK has the most absurd punish game of any fighter in Smash 4. What holds him back? A really hard to play neutral. He lacks the aerial shield safety Ryu and ZSS have, so your neutral is almost entirely played grounded.
But seriously I'm sure people have heard enough about MK from me lol
A fighter I also see a lot of argument for about his placing. Idk, he goes fast and doesn't lose many matchups. Optimally played Sonic (i.e., Komorikiri play) is really, really scary, in that you have to take all initiatives against this fighter, or he'll just camp you and never have to approach, ever. They're your mistakes to make, the sonic just has to stay patient and smart. Unfortunately for him, Smash 4's top tiers have really absurd punish games, so he really, really cant make any mistakes. Well, fortunate for viewers I guess, because it means you'll see way less Sonics at top level, because he is hard to play optimally + win.
This fighter is so over hyped. This fighter is also very good. My opinion is just that this fighter is way too vanilla to be top 5. He's basically Mario with less range, less damage on hit, more troubles killing, but with quick attack. Thing is with quick attack though is that it's also really over hyped as a move. Yes, it's good. No, it's not OP, not even slightly. Dealing with quick attack is fairly easy for most top tiers.
Also, this fighter is only pushed forward at top level by ESAM. When people put Pika in top 5, it's because of ESAM. Without him this fighter wouldn't be on the radar at all. ESAM is really, really good. If this fighter was top 5, we'd actually see ESAM win stuff, sorry.
I don't think this is a controversial postition for Fox at all. Fox's only big issue is trouble killing. Everything else about him is very good.
Ah, what a bumpy ride Diddy Kong has had. He's still kicking though, with Fairs. Kicking you right in the face with fairs.
I really don't have much to say about Diddy. He's really good. Banana is really good. Monkey flip is really good. He has really good aerials.
What I will say is I think Diddy Kong is the very bottom of top tier. Which cleanly rounds off the top tier to 10 fighters! The power gap between Diddy and any fighter not listed here is significant enough, IMO, that a distinction should be made. Yeah, you can win stuff if you were playing a fighter below Diddy, but you're going to have a rough time each and every time you meet one of the fighters in this top ten.
So yeah, top ten.