My take on the SNES vs MD:
SNES was hands down the best system, not only it had better hardware as a newer console, it also had a ton more good or great games than the MD.
That being said, the MD was not an inferior version of the SNES, but a different thing altogether.
MD and SNES had quite different aproaches, and that is were a lot of personal prefference takes come from.
Even when the SNES had way more good or great games IMO, the MD still have my favorite game from that generation, which is Sonic 2, and the best Beat'em Up of all time that is Streets of Rage 2, that's how much a few games can weight up when people talk about which systems are their favorites.
So even as the SNES is the superior system objectively, the MD would be my favorite one of the two.