Well, the controls weren't the biggest problem with Street Fighter 2 on the amiga, it was just awkwardly played. The SNES version were simply a much better version of the game.
Super Street Fighter 2 Turbo CD32, I thought that was okay when I play it today. Didn't try it when it was new. But the controls seemed to have improved, but the biggest mistake was reducing the size of the sprites/characters. Street Fighter 2 had big characters, but I thought SSF2Turbo seemed smaller. Maybe I'm wrong, but there's something missing at least.