oof that sonic MU. Do the other marios think its this bad or is it just Anti and Dark Wizzy?
Many of them seem to think it's that bad, yes. A saw a few put it at slight disadvantage though. The notable Sonic mains seem to lean towards slight advantage for them though, with only a few putting it at advantage (+2).
Oh, and Samsora posted a MU chart for Peach.
There was a problem fetching the tweet
Meta Knight only being -1 is interesting, as is Corrin being even. With that MU chart I could see her current 4BR spot being fairly accuratep around where she is on the 4BR tier list (either near the bottom of B tier or the top of C tier).
: The dominant two. Back then the top two was highly debatable but now I see a lot of top players putting these as their top two and I feel like the majority of the Smash community accepts these as the top two.
These two stand out for several reasons. They seem to be the most popular characters to switch to when ones mid/low tier main isn't working (or even high tier, as is the case with Abadango and MkLeo). Both of them stand out because even in theory they have 1-2 bad MUs at most, it seems (with most people considering Bayonetta to have 0 bad MUs and Cloud 1, Sheik, although some people, like ESAM, think that Pikachu wins as well).
Diddy Kong does quite well in Europe (at, I suppose, mid/high levels of play). Anyway, these characters (especially Diddy Kong and Sheik) stand out because of "potential". They have the potential to be top 2, but they could be lower, depending on how their MU spread ends up.
Sheik might lose 0 MUs and could potentially have the 2nd best MU spread in the game, but she could also lose 2-3 MUs (Rosalina, Mario, and Pikachu*). She's also one of the hardest characters to play well, and probably the top tier that struggles the most to kill. Her pros greatly outweigh her cons though, and she'll easily remain in top tier until the next patch (if any).
Diddy Kong is an interesting case. Perhaps he only loses 1 MU (Rosalina), perhaps even 0. Perhaps he loses several (Mario, Luigi, Lucario, Mega Man, Bayonetta**, Cloud**, Pikachu). Chances are most of the MU people think he might lose are just even MUs that are somewhat hard for Diddy. Of course, we need to keep in mind that if ZeRo played some other character, then Diddy might not have been considered top 5. I think he is, but there's room for doubt.
Sonic is an interesting case. He might lose to Cloud, which hurts. He might also lose to Bayonetta, which also hurts. Sonic's MU spread, against top tiers, strike me as fairly "even" though. He does quite well against high tiers and lower tiers, but that's no big surprise for a top tier character. Sonic is probably one of the most solid top tiers. I could see him being top 5.
*ESAM opinion.
**ZeRo opinion.
These characters are quite interesting. As you said, they can be quite explosive (at least Fox and ZSS can, and Rosa has Luma jank). While they can be difficult to fight, they also have significant weaknesses which translates into several potentially bad MUs.
Fox is probably one of the top tiers with some of the wonkiest losses,
potentially losing against Kirby and Luigi, as well as losing against some other characters. He's a character that could be #5 but could also be #8. I personally think he's really good.
Rosalina is interesting. She likely loses to Cloud and Meta Knight, at the very least. She probably loses to Corrin as well, and might lose a few other MUs (like Bayonetta). On the other hand, she potentially wins some of the most important MUs in top tier and high tier, such as Diddy Kong, Sheik, and Ryu. She (along with ZSS) has the advantage of being one of the strongest character against Bowser and Donkey Kong, which means she's less likely to be counter-picked by them. Unless the Cloud MU develops into a -2 (which I find highly unlikely), Rosalina will likely remain in top tier. She's a strong contender for the #6 slot, in my opinion.
And ZSS. She's borderline high tier but probably just enough to be considered top tier, barely. Probably ends up at #8. 8/55 (or 58 if you count Miis) is still pretty good, and she's a very viable character.
These characters are all good but with some notable flaws. I think Corrin should be added to this group (she might be better than some of these characters).
Mario is probably the most overrated character in the game right now (and has been ever since he won EVO 2016). ANTi's MU chart supports my argument. Mario losing -2 to Sonic really hurts, and -1 to Donkey Kong (common counter-pick character), ZSS, Marcina, Corrin, and Bayonetta also hurts (especially Bayonetta). The only +1 MU he has that really makes up for this is Sheik, which is nice but not quite enough to push him into top tier. Winning against Meta Knight, Greninja, Pikachu, and Captain Falcon is also really nice, though. These wins, along with him going even with a lot of top tiers, means that Mario will likely remain in top 15 for the forseeable future.
Of course, ANTi could be wrong about some of these MUs. Perhaps Dark Wizzy is correct. Sonic -2, Marcina, Cloud (!), Bayonetta -1. Potentially +1 vs Rosalina, as well as +1 vs Diddy Kong and Sheik. If this MU chart is correct (I think it's too optimistic), then Mario would be one of the best secondaries in the game. Additionally, he would probably be at the top of high tier or the bottom of top tier, perhaps around ZSS' level. Again though, I think Dark Wizzy is slightly too optimistic, but I acknowledge that I could be wrong.