I'm not surprised. Motion control is unraveling even for Nintendo (I don't remember the last Wii game which was talked about because of motion control, only the revivals of core Nintendo franchises). Which is as I predicted because soccer moms and old people don't buy consoles and games during a recession. If MS had got this out of the door a couple of years ago there might have been some mileage for them, as it stands I reckon this is going to tank pretty hard, just like all motion control ultimately will until it can give meaningful physical feedback.