The motions themselves are still going to be larger lags than button presses.
Motion control is just in it's infancy. It's not about reaction time. It's about "control". As in controller.
Using a light saber in a game for example with a controller is pretty lame. Press a botton. WOW! Sure I can press it really fast, but more or less I have no "control" over it. Mostly it's up to the computer how and where it moves. That's not fun.
With motion control there is no need for speed exactly as long as the system can follow my movements as fast as I move my light saber movements. Now I have "control". Now I am immersed.
One technology doesn't have to replace another. There doesn't have to be motion control vs button wars. I still play systems that have 1 or 2 button controllers. That doesn't mean I go around yelling, 24 buttons is means less immersions, because your brain takes more time to think were each button is! That 12x's less immersive!
:roflmao:
