I have to say that even though this game has been pushed onto as many fronts as possible, and that typically limits the graphics of the game to the lowest common denominator, I could tell a marked improvement in the quality of the textures and lighting in this version of the game. I can't say for certain that the actual models (both character and environmental) necessarily consisted of a larger number of polygons, but the textures and costumes were a lot crisper than in the other two formats. And that is saying something since I thought the visuals on the other systems were noteworthy to begin with.
Audio-wise, the game was the same as the others. Characters sounded like they should, or at least how I always heard them in my head. Wolverine sounds like a gruff and perpetually angry little guy while Spider-Man is a sarcastic wiseguy and Thor has a distinctive Nordic accent. The game's soundtrack also seemed to have just the right feel. I always felt like I was going off into a heroic battle.