>>2752432>They didn't have enough space on the rom to fit all characters, so they had to split the games into 2.Nah, they actually tweaked the games. Both of them were updates like SF2 -> SF2 CE/Turbo/SSF2/SSF2T.
One move that was changed from the top of my head was one of Bulettas supers, the autocombo one, it has extra startup time in VS2.
>They ran into the same problem with X-Men vs Street Fighter and Marvel Super Heroes vs Street Fighter.This is false. Those two were designed as two separate games, and again had different gameplay (you could do assists for one).