Actually, there is nothing special about this game. In vs mode its just a bunch of random button mashing, in which you attempt to pull off random specials. the only good part is that there are alot of characters to choose from. Download play is a BIG letdown. It works pretty well, but the loading times are so frustrating. It takes one min to load the character selection screen, one min to load the game, another min to load the character selection screen for the second round, and so on and so on. The story mode in my opinion is absolute crap. The text sucks, and you will end up skipping through most of it as it consists of texts like, where is my bonnie, why aren't you fighting me, etc. Also, the story mode is tedious as you end up fighting the same guy OVER AND OVER again. And for most of the different episodes, they are just played from different points of view, so it's so very boring.
But bare in mind, that this is just MY opinion. If you enjoy pure beat em ups, and don't mind skipping the text, this game might be for you.