While the PS3 beats the Wii in many genres platformers seem more to be on personal preference. PS3 has Ratchet & Clank and Little Big Planet. The Wii has Super Paper Mario, Wario Land Shake It, and Super Mario Galaxy(which you don't like). There are also quite a few smaller ones and multiplats on both consoles, but those are just the big ones. After listing these it is generally your opinion on the series and games that will tell you which is the best for platformers. This is without taking in consideration Virtual Console/Wii Ware/PSN/Gamecube/PS2/PS1 games.
As for the other genres there are many games for the Wii in just about all of those. I don't feel like listing them because if you really want to keep your wii you will research yourself(which isn't hard at all).
