I have the bias toward SNES, having been a staunch Nintendo guy up until 1998. I played everything, but Genesis stuff so often just felt rough to me, and that never really changed. The Genesis' smaller on-screen color palette and more limited sound just have always made it feel coarse when compared to the SNES and even TG16. For me, where the Genesis feels strong is arcade-style side-scrollers. Mystic Defender, Alisia Dragoon, Contra Hard Corps, Gunstar Heroes, Shinobi... they hold up well for me. So do the unique oddities like Gain Ground, Toejam & Earl, Crackdown, etc.

I think part of what hurts the Genesis is how things have changed in gaming. It was once lauded for its sports games, but very few people care about 20+ year old football games now. 2D fighters post-16 bit era really left the old games in the dust. Amiga strategy ports are largely outclassed by years of design improvement... these things don't feel timeless, even though they were pushing the envelope at the time.

I feel like the SNES library overall was less concerned with pushing things forward or being edgy and more about maximizing its strengths in design in its own time, and as a result it feels more elegant and polished... and its more flexible sound chip didn't hurt. More on-screen colors helps smooth out rough edges, so it generally just feels more complete.

Oh, and Beyond Oasis... that game feels like one of the more polished Genesis games to me. Slick game.