What happened to you? Locked away for 10 years? I had a Spectrum but it was 9 years before the SNES was released in the UK. I had an Amiga in-between!
Post Amiga I got a SNES and SuperWildCard DX.
AFAIR it blew the Megadrive out of the water.
Only games I was ever the slightest bit jealous of was Micky Mouse & Sonic but the Megadrive owners were far more jealous of all my SNES collection. Excluding everything previously mentioned : Super StarWars, Super Empire Strikes back, Rock n Roll Racing.
If you want to see how superior the SNES was, just play Aero the Acrobat on both.