Imo Jigglypuff Zelda is either 0 or -1.
I don't have much to go by though because only Jigglypuff I've played in tournament is Thinkaman and that was only once.
I feel like if the Jigglypuff played super campy Zelda couldn't really do anything and it would be a -1, on the other hand if Zelda's in the lead it's super hard for Jigglypuff to get in in Zelda has the lead so idk.
Honestly, I think Zelda is probably the worst designed character in the game.
I mean, Ganondorf is slow and unsafe, but he was built that way so he could succeed with few hits.
Link was very well-built but has ONE big, fatal flaw.
Jigglypuff had some execution problems, Rest doesn't really hit anyone and the new decay mechanics really hurt her gameplan.
But Zelda.... simply has a moveset that makes no sense...
She at least has some not bad matchups, and is somehow competent within the Low Tier, but yeah, her design is terrible (even though she's pared with Sheik, she's still VERY bad).
I think Zelda was designed with the intention of being in the mage/glass canon archetype.
Strong magic attacks, long range, keep away hitboxes with slow movement speed, low health, easy to kill but can deal a lot of damage.
Her problem is they didn't design her positive traits very well and over looked way too many things, like Kayla said you can SDI half of her attacks, the lag on all of her specials is bad and her grab speed is very limiting.
All these negative end up outweighing the positives and you get a bad character.
^^The thing with Ganon, like I said before, is when he gets shut down he can't do anything. Almost every character's jab is faster and will beat his entire move set and he has to approach with a huge hurtbox and very little mobility. Ganon's fastest ground move is frame 8 jab and 7 grab which has terrible range. Aside from Uair and Dair his hit boxes have little reach that doesn't include his hurt box. He gets good results and can KO in 5 hits but getting shutdown so hard really sucks.
Zelda's design might be bad but her stats (airspeed, frame 3 Dsmash, etc) boost her above Ganon. Brawl 'OldManDorf' got nerfed terribly
. Ganon just MURDERS players who don't know what they're doing lol.
A lot of the things you listed apply to Zelda, albeit to a slightly lesser extent.
She's almost just as slow and yes she has decent air speed but that's pretty much off put by her having the worst aerial game of the roster.
Having slightly better speed and better frame data is almost off put by being helpless in the air and dying like 30% earlier.
Her approach is Ganon levels bad and she can't get near campy characters easily (Toon Link, Samus, Diddy, ROB ((
ones that actually camp her and know the macth-up, unlike Chibo. No shade intended, just clocking the tea where it needs to be clocked)) )
Her OOS options are too bad to deal with characters than can play really aggressive (Peach, Fox, ZSS, ICs)
Then there are characters that just wreck her whether they play defensively or offensively(Olimar, MK, Marth, Lucario, Wolf)
She gets shut down by nearly as many characters as Ganon, despite what the terrible MU chart says.
At this rate with the queens who gave her those match ups she's a lot more likely to go up rather than down.
Again no shade, but +2 against Ganon?
Like...really?
Because it came up that her character design is bad, I'll ask here: what changes should Zelda get in SSB4? Also, what would you like her to look like?
IMO maybe weaken some of her attacks but make them faster so she can space with them. Specifically Fair, Ftilt. Maybe give her a jab that can be done rapidly like Pika's. Her Dair should be able to be SHed as an approach like Samus'. Less lag on specials and have Din's not force free falling. Not entirely change her dynamics but give her options to get in and attack quickly without big commitments.
I'd like to see her stay realistic like the TP model but better graphics, like they had Link. Maybe have her default be blond. A Skyward Sword alternet costume would be cool but I don't want her default to be SS Zelda.
Better grab, Din's fire that she can actually camp with, Farore's and Nayru's without stupid amounts of lag and attacks that aren't really easy to SDI out of.
All of these things would make her miles better.
Her aerial game needs at least move that is reliable so she isn't a giant helpless pillow when shes knocked in the air.
Honestly I think that's all she needs to be a pretty decent character.