I disagree, although I was only really playing friendlies w/ MogX w/ sheik, no mms. Maybe I just suck v. Marth now, but that MU is ridiculous esp. when offstage, and sideB does so much for marth in the MU. Kirby feels more pokeish, but I feel he has less going for him ground-wise than Marth does, and although Kirby's juggle game and abuse of us offstage is strong, I don't feel it's as bad as Marth, and when playing MogX, it didn't seem all that bad (I actually took a game or two off, dare I say it), but then again he'd never fought sheik prior probably, and after adapting a little more it became harder (especially when he capitalized on my huge impatience after awhile). Oh, and playing against Marth's shield is obnoxious, when you do get inside, it's always tricky if he hasn't done something mega punishable, upB oos, aerials, etc. Kirby is a smaller target, but I feel like I can play around his shield more often without having to worry about getting murdered, whereas getting sideB'd once or upB'd once usually feels like I lose a lot of control (because they usually send me offstage or away from the center, which is clearly bad).
idk, bad marth is fun, good marth is silly. I want to play this YBM guy since he seems to know the MU well, but from what I did against Kirby, it seemed ok.
disclaimer: this isn't in light of my pools match in Gen 2 v. Mike, I know everything I did wrong, and it wasn't even a matter of how the characters panned, I just sucked from going on a huge mental block/trip after learning I had switched pools after studying the MU I was originally studying for (I was originally in Cheese's pool, although clearly I would've gone Lucario for that, I in retrospect learned to be ready for ANY match). All those mistakes were my bad play, not a matter of the MU itself.
I do agree with snake MU being fun, even when the snake knows how to stop tilt lock, it's a great MU and it feels so fun to play (on both ends, actually).