I used to play Street Fighter on the Super Nintendo all of the time. There were 4 SNES Street Fighter games
Street Fighter 2: The World Warrior
Street Fighter 2 Turbo: Hyper Fighting
Super Street Fighter 2: The New Challengers
Street Fighter Alpha 2
But, since this thread is about Street Fighter 2.. then, I have to talk about my favorite Street Fighter 2 version... Super Street Fighter 2: The New Challengers.
I played this version more than all of the other 3 SNES Street Fighter games combined. Seriously. This was always my favorite of the SNES titles. I would of liked, and played, Alpha 2 more. But, for one I liked Alpha 3 on the Playstation so much more. And 2, Alpha 2 on the SNES suffered from slowdowns regularly. Which took away from the game. Also, I didn't play Street Fighter on the Genesis much. I did a few times. But I liked the SNES versions much much better.
My brother, and cousins, and friends, and I, would play against each other in Super Street Fighter 2 so much. I remember when the movie came out. We were there, first day, first showing. Everybody at school was talking about going. And boom, first day, first showing, everybody was at the theater. I saw kids from my class all over that theater. Good times. And then, the moment the movie was over, we wanted to get that bad taste out of our mouths, so we went home and played Street Fighter 2 on the SNES, and forgot all about that movie. Tho, we did discuss how we could of wrote a better script for the film. I could go on and on about that movie. But not now. Another time.
However, since Mortal Kombat was already brought up in this thread, I'll add a little bit about that. First off, in all honesty, I preferred Mortal Kombat on the Sega Genesis better than the Super Nintendo version. Now, the Super Nintendo version looked better, sure. I'll give it that. Also, there was the blood issue with that game... you know, not having it, and all. However, I honestly liked the controls better on the Genesis. For some reason, it felt easier for me to pull of the moves and fatalities on the Genesis version than I could on the SNES. The Genesis version didn't look as sharp, however, it, for me, controlled much better. By comparison, the SNES controls felt too stiff and laggy for me. Sure, the game looked better, but it didn't control better. I had a harder time pulling things off for some reason. I mean, I could still do everything, but it didn't feel as quick or as comfortable or as smooth as the Genesis version. So I liked the Genesis version much better in terms of control. Also, the music stood out too. The SNES version felt kind of drab in the music department. It was clear and all, but sounded muffled at times. The Genesis version sounded rough around the edges, however, it also felt more lively and upbeat. The SNES sound made it feel like a drag or downer playing that game. But the Genesis music was more upbeat and alive. Got you in a 'fighting' mood. It didn't 'bore you to death' like the SNES's music did. The SNES got more of the actual fighting sound effects right. But the Genesis had the better music, even if it did sound more "rough" and had that 'Genesis' feel to it at times.
So, in the end, I have to give the Graphics and Sound Effects and voice acting to the SNES version. But the Controls, Music, and Fatalities, have to go to the Genesis version. And, in the end, even tho the SNES looked more like the arcade version, I had more fun on the Genesis version. Oh, and the blood was nice too. But the blood wasn't a make or break feature.
However, for Mortal Kombat 2, that's all SNES all the way there. It not only looked better, but controlled better, and had smooth controls. It made the Genesis version look completely outdated, even tho they were released at the same time.
So, for me, it was Genesis for part 1, and SNES for part 2. I only played part 3 in the arcades, and on the Genesis version. I don't recall playing Mortal Kombat 3 on the SNES. So I can't speak for part 3. If I had to guess, I would guess that the SNES version was better. But, again, I can't say for sure. So, for me, the score is tied, 1-1, for Mortal Kombat on the Genesis and SNES.
However, between all of the Mortal Kombat and Street Fighter games on the SNES and Genesis, Super Street Fighter 2: The New Challengers, for the SNES, was my favorite, and easily trumps them all for me.
Of my all time favorite Street Fighter or Street Fighter related games.. My all time favorite list includes..
Super Street Fighter 2: The New Challengers
Street Fighter Alpha 3
Capcom VS SNK 2