TMNT and The Simpsons run perfectly on my pi, much to my displeasure, because I hate them and my 5 year old daughter makes me play them all the time.
SF2 runs very close to full speed, only experiencing almost imperceptible choppiness in certain places, like at the end of a fight.
MK is playable but is a lot more choppy than SF2.
I would like to stress that my pi is the first ever model B, and I expect the B+, pi2 and pi3 would be a vast improvement.
I'm running mame4all, which is a lot faster than advancemame.