I love MVC2 as much as the next guy, but it seriously had one of the most video/audio bizarre presentation I've ever seen in a video game.
All the characters are 2D sprites ported over from all the previous VS games plus other sources like Street Fighter Alpha, and yet they're presented against fully 3D backgrounds, and not only that, but none of the stages are even based on any locations from Marvel or Capcom, instead relying on generic carnivals/rivers/caves/etc, and of course, there's the infamously bizarre jazz soundtrack. Everything about this game was pretty much haphazardly thrown together with little to no cohesion.
And yet, oddly enough, it's still certainly much more appealing than MVC Infinite.