You have to do the swap at precisely the right moment. I used to do the swap trick w/ X-Men vs. SF and I could get it to work roughly one out of 4 times. There is sort of a Capcom splash screen at the beginning...I think you have to swap right at the beginning of that.Originally Posted by suznjak
So you may not necessarily NEED the 4 in 1 cart, but all the swapping will get to you after a while. Get the cart.