cant really compare this to the wii imo, they are different kinds of consoles. Wii has always been family and friends orientated thing, and imo the xbox is more of a geek sit in your room on your own and play call of duty kind of console
I think this along with the playstation more or whatever sh!te its called is just an attempt to take some of the market away from the wii, and I dont think it will last long especially for the silly money they are charging. If people want a moton sensored console they will still buy the wii, I cant see anyone buying an xbox for this feature.
Expecting to see this on one of the top gadget fail lists in the future along with the saturn and the dreamcast