Again, I don't necessarily disagree, but it's just to give at an-at-glance representation of how flawed the game is on any level, and that's literally the only easy graph that's out there to point to. The actual MUs are *way* worse, and it's like IaMP where it just devolves into the top 3 (Ichirin, Kokoro, Byakuren). Agaiin, I understand and fully agree they're horribly flawed, but it's the easiest way I can think of to provide a showcase of "why it's a bad game" in the face of counter-arguments (and yeah, Marisa wouldn't be remotely as high as she is if people actually played post-patches and there was enough of a desire to set up actual community stats, which I suppose is the more damning take-away from this).
I'm more concerned with longevity personally, and balance is a huge part of that. Sure, every fighter tends to have one or two bad characters, and usually one or two utterly exceptional ones. At times, ones that even utterly break the game (hi akuma and you air fireballs how you doin). But ULiL devolves at any level into high tiers shit-stomping low tiers, and low tiers being utterly unfun to play (and it's a personal thing but the rocket tag nature of high level play isn't terribly fun either from what I've watched/had limited experience with since nobody plays it and the only way I can know about these MU numbers is asking questions and getting second-hand discussion). And yes, one can argue this is a problem of fighters of the present that never was one in the past, since in the past you had situations like MvC2 where it was just the top 4 and god forbid you try anyone else, but now roster balance/diversity is a real concern and that's the now. Sure, it's not really a concern at a lower level unless there's a particularly poor balancing effort, but it takes really devoted, invested players to set up a community, and that just won't happen if the balance is utter shite.
Though yeah I will fully concede that game flow/play is ultra important even before the step of "but what about roster balance" and many people were soured on the initial utter mess that HM was. But I feel like ULiL did make some real big upgrades to the fun aspect, and if they tightened it up more and did some serious balancing passes we could at least wind up with a fun distraction that gets enough interest for a acofroll and a modest player-base for a bit
aaand yeah there's two reasons I'm personally uninterested in trying to get into IaMP even though it has fewer RNG elements, and that's one of them. Other one being the player base is way hella tiny in comparison to hisou's, which is already p modest..