no its another controller. you can use it with snowboarding by leaning the new rayman uses it and actually lots of games are now starting to use it. it senses body movements so with the wiimote and nunchuck in hand it has alot more control and add a new dimension to gaming
there are loads of great games, there are lots of crappy games but there is some great ones lost in there.
some games are exclusive to these platforms, and they both have different features, so i think both are good
i think the differ between PS3 and Wii is too big to compare...... its obivous who is the better..... the only thing you can compare between them is game....... so if you like party gimick game, go for Wii, if you like serious game, go for PS3.