oh also! Genesis has the best action games. Gunstar Heroes, Shinobi III, Mega Turrican vs the Super Turrican games, all I can think offhand. If you really want to stretch it you can probably count Super Metroid but even then it's still in favor of the Genesis.
RPGs are pretty one sided if you count Japan only releases but if it's only US it's closer. Phantasy Star and Shining Force are notable, at least. Genesis loses either way but it's not a smackdown if you only count US releases!