If you only count EXCLUSIVES 95 and up, Wii has 1 and 360 has none.
And saying the 360 has a more diverse line-up is a joke, unless you mean a more diverse line-up of shooters.
360 has nothing like Galaxy, Wii Sports, and Wii Fit. Those 3 games alone make the Wii the most unique game library ever. You've got the most revolutionary platformer GAMEPLAY-WISE of all time, the most revolutionary motion-controlled sports collection of all time, the most revolutionary balance-measuring game controller and exercise program of all time.