The reason why lag on the Move is not so much of a problem as on Kinect, is because you are not looking at your hands while moving, so the brain covers up some of the delay anyway.
The problem for Kinect is because in many cases you are seeing your whole body on screen, the lag becomes more noticable to your brain, than if it was just your hands. Its a brain and vision thing.
But on most of the videos ive seen lately where you can see the body and the device, it seems pretty good. There is a video of a guy showing off the fighting game, and he is going pretty fast and its keeping up pretty well. Guess we wont know for certain until we get it in our hands, but i dont see it being a big problem in most cases technically.
Edit: Ive removed the comment about controller lag, as there seems to be quite alot of issues with that calculation from what i have read on the internet, including using augmented games and monitor lag. But the lag isnt meant to be that bad compared to when it was first shown.
