SNES > Genesis for a number of reasons.
Graphics were alot better on SNES..just look at SNES version of Street Fighter 2 vs the Genesis version.
Sound on SNES was a million times better than Genesis.
Games were more innovative on SNES, no they were not bloody...but I'm sorry blood does not make a good game.
SNES had Dracula X, Killer Instinct, Zelda III, Castlevania IV, Super Mario World, Super Mario RPG, Squaresoft games..all of which were awesome, Super Street Fighter 2, Star Fox, Super Punchout, numerous Neo-Geo ports that were superior to the Genesis ports, Super Metroid, Final Fight.....the list goes on and on seemingly forever.
The genesis had Sonic, Gunstar Heroes, Castlevania Bloodlines, and bloody MK....thats about all that springs to mind for me. And I also should mention that even though MK had blood on Genesis its graphics were fairly ugly and small compared to the SNES. Also..MK was an aweful game anyways :lol
Once the MK games got somewhat decent with MK2 the blood was on the SNES games..so thats not really an issue.