Surely its just operating software based in the system itself, its the controllers that have it built in, just like the afore mentioned force feedback on systems like the PS1.
yeah, the operating system is just the powerhouse. it can do anything the game tells it to do, within limits. its the game that says "ok, we're not using a joystick anymore, we're doin some crazy motion shit." the controller then has to be set up to take advantage of that, which is why the controller, in microsoft's case, has to be entirely new.
that doesn't mean it will be bad, in fact, it could be awesome! the problem is that when you're trying to get an established community to shell out another $40 for something that may, or may not, have a lifespan depending on its gimmickability, it hurts itself.
rockband/guitar hero's guitar is a sample of this being a success
donkey kong jungle beat's bongos is not
PS:
I have no idea why Sammitch says the PS3 motion sensitivity is superior.
he is a gigantic homo