I think and probably always will think that smash bros. as a series is the most fun "fighting" game possible.
i highly disagree that it's of a higher competitive quality than MVC3 though.
BUT. I believe this could quite possibly be because I don't fully UNDERSTAND brawl.
because (while we're talking about MVC3), I originally thought marvel 3 was dumb because of how easy it is to lose an entire character, and how ridiculously powerful X-factor is, but eventually I realized that these factors were all intentional developer decisions and they require you to play the game in a certain way unlike most other games in the versus series. after watching how top players react to the things in the game I think are dumb I felt like I understood the game more.
I haven't really had that kind of epiphany for brawl. it just gets dumber and dumber the more I think complexly about it. i see top players consistently winning, so obviously there is some skill curve in this game, but when i watch them. I really don't understand what they are doing differently. Considering the fact that we know that the developers didn't intentionally program mechanics in the game that would increase competitiveness (for the most part, there are some things, I will grant you), it makes me assume that the top players just learn more about the game and memorize increasingly better gimmicks.
but again maybe I dunno wtf I'm talking about.
this was longer than I intended it to be