Like I say, that's one very good input, but a limited one that doesn't automatically put MS in the strongest position. In a tennis game, for example, Kinect versus Move with a headset, Move would provide the better experience in a home environment. It's lower latency and higher accuracy and can tell wrist rotation. In a big hall where you can run around, Kinect could be better as you could actually run around and the game would draw your boundaries so you don't run into stuff.MS has the best consumer skeleton tracking I've ever seen and coupled with a vr head set will blow away the tracking that oculus or sony has.
Both system have advantages and disadvantages, but they both only pertain to the input mechanics. VR starts with a headset (VR at a desk with a joystick is still VR), ergo whoever has the best/most close to release prototype has to be the company ahead of the game. And most importantly, all MS's noise and patents and such these days are about AR, not VR, so a headset from them would be a surprise. To suggest they are in the lead because if they have a headset, they'll have headset with Kinect, is similar to saying Usain Bolt is in the lead in the Commonwealth Games 100m even if he hasn't entered because if he did, he'd be the fastest. MS have yet to enter the race as far as we're informed.