I was at this asian bikini bar in Garden Grove, CA (Sugars, iirc) and I saw this in the corner. The cab said "MORTAL 4 KOMBAT" at the top but it was SF2.
I popped a quarter in (which it ate on the left side) and then popped it in on the other side and it let me play as player 1.
Anyway, when I started playing I noticed that all the special moves were weird. SRK would go across the screen, hit multiple times, depending on punch.
Hadouken was same way, one went straight at sonic boom speed in SF4 so you could walk with it. One went up, and one went down. Tatsu was weird too.
What did I play?