How so? Hulk, Iron Man, Quasar, Thor, Hercules, Valkyrie etc etc etc
they're not perfect matches, but they're more balanced fighters with one another, in a video game sense. it is more reasonable to see a wolverine / hulk fight or a captain america / iron man fight than it is to see a green arrow / wonder woman fight or a superman / aquaman fight
marvel characters also have abilities that translate better into video game form, and i'd think dc characters would have a harder time handling that. superman's "i should have beaten everyone in the game in 3 seconds" aside, how would the flash translate? which button is the "fastest speed on earth" button?
maybe part of the storyline is that they're all somehow depowered a bit...? i dunno.
