LogFAQs > #964202703

The Genesis was quite competitive at the time, but a lot of their heavy hitters didn't exactly age well.

Survivorship bias also helps the SNES be more memorable as many of the series continued post-SNES while a lot of Genesis games didn't make it past the generation or died out quite quickly after that.

It also helps that SNES owners were more concentrated on certain games and thus became more memorable among a wide audience while Genesis owners bought a large variety of games and thus games one person loved may not have been played by other people on the console.