I actually played the Saturn version with the 4MB RAM cart, and I have to say that the PS1 version SUCKS! Why? Because tag-team was taken out because the PS1 could not handle it. It did not have enough RAM (Random Access Memory) to switch fighters since it takes about at least 40 MB of RAM, and the PS1 only has 32 MB.  If Capcom did put in tag-team, then it would take forever to load up a character once you tag-team with it, you can tag-team with the same character, but it does not feel the same.