meh. the wii controllers have motion detection and vibration, so i don't buy that it screws the sensors up. unless sony just didn't want to put the time into perfecting the motion detection. besides, isn't that one of the points of the vibration? when you fire a gun, there should be recoil. when you run into something in GT there should be some shock.. with some actual movement in the controller, it'd be more realistic, because it actually disrupts your movement a little.

i think the patent infringement issue is the reason for not including the dual shock feature, and the motion detection reason is just an excuse.