The sounds effects slightly for snes however for the stage music etc I'll give the win to sega way closer to the arcade and it sounds better than the cheap version on the snes wich isn't bad but it has that snes vibe to it.
Also The sega version has the original intro with a man punching someone in the face wich was removed in the snes version.
You do realize that there was one version of Street Fighter II on the Genesis (Championship Edition) compared to three versions on the SNES (SFII, SFII Turbo, Super SSFII Turbo)? The SNES versions were all better sellers than the Genesis version and are widely considered to be superior.
Also, the original intro you are fond of with two generic dudes punching each other was altered on the Genesis from the arcade version where blood was removed. So the Genesis version didn't even feature the same intro, and it's a crappy intro at that. It's literally two generic dudebros throwing punches and has absolutely nothing to do with the characters or story of the game.
Seriously Are you really that smart?
Guess not, do some research, the genesis has street fighter champion edition and super street fighter II wich I own both.
Street fighter champion edition in snes is street fighter II turbo, still with the sega leaving more battle mode options compared to the snes version.
However that so called extra game Street fighter II on snes is just street fighter turbo with way less options and 4 less characters pretty much in playable aspect a waste since it could have been done with turbo only.
Also another mistake on your part on the snes It's super street fighter II, not street fighter II turbo just saying.
Also the cut scene in the sega version is still pretty nice aside from it being nerfed in matter of blood and that a white guy was actually punching a black guy wich was really cruel at the time aside from that it is pretty much the same.
I admit the original from the arcades and on ps1 upwards consoles is better but it still is an awesome intro scene the best in the street fighter series aside from it being nerfed on the genesis. If you do not like that intro than your no street fighter fan since that intro is a true classic, all the other street fighter intro's are rather boring, this one is pure goodness of that time period with the humour of the time. Two dudes beating eachother up It's classic.Street fighter games with story? seriously nobody give a damm. The king of fighter has a better story line than street fighter anways.
Also regarding controllers, were talking about nowadays not back in the day when controllers were expensive as ****. If your a serious genesis/megadrive player You'll get yourself an arcade and or 6 button pad controller. Controllers are not really the issue here especially lose ones. As a megadrive fan myself I have 2 arcade sticks in the box with manuals etc and 2 6 button wireless padds controllers.
So what you'll lose 20-25 dollars on an arcade stick? who cares It's not like your going broke or something for a one time purchase.