Yes but they aren't allowed for tournaments my friend. Dreamcast is the only tournament standard for MvC2
All the versions are inconsistent, PS2 version had glitches of it's own outside the infinites that were built, the PS3 and 360 versions have issues with the extended screen and they modified some characters comboes for the port.
The Dreamcast version is the only Direct Arcade port the game ever had, so that's the standard.