Yes, Nintendo has been very successful with Wii Fit, more successful than any other perifiel. Guitar Hero and Rock Band are very successful. But when it comes down to it what does it really change? They might as well be any other successful games. Wii Fit has spawned a couple other million sellers that use the board, but it isn't drastically changing the way companies develope for the Wii. You want this not only to be successful but to change the landscape of the XBox360's library. It is not going to happen.
Secondly. If this is really there answer to the Wii then they are missing something that Nintendo showed them. When Mario Kart came out they could have just said "Turn the remote on its side and pretend it is a steering wheel." Any guesses of how many million copies they would have left on the table had they done that? People need to hold something. It gives them a reference point to orient to, it creates a positive interaction between turns in hotswap play, and mostly it gives the developer all sorts of tools-- sound, feedback.... buttons.
Seriously, if Microsoft thinks it can revamp last gen technology to deal with a deficiency this gen I don't have much hope for them.
"You can never jump away from Conclusions. Getting back is not so easy. That's why we're so terribly crowded here."
Canby - The Phantom Tollbooth
