Let's get one thing straight: You CANNOT compare the move and the Kinect for Xbox 360. There as similar as toast and a dog.
While Kinect allows you to swipe your arms and kick you feet about, the move is far more traditional in the sense that you still have a piece of tech in your hands. Now therein lies the beauty of the Move for me.
Playing the table tennis demo (and comparing to the Kinect version) you'll instantly notice:
* It's far more accurate and responsive
* Feels more natural since the controller is your paddle on-screen
* Gives you the ability to make MINUTE twists, cuts, slices and smashes, whereas the Kinect is essentially just "SLAP BALL... SLAP BALL AGAIN"
* And for me the best thing was the force feedback, which really gave the sense that I was HITTING the ball
I've also played Killzone 3 with the Move, and that finally proved it to me: "This thing has an amazing future ahead!".
While the Wii is limited to the awful graphics, and the Kinect will simply have to stay with not-overly-complex games (how are you going to play an FPS on it really...?), the Move has the best of both. Amazing graphics, excellent control, and MANY, MANY applications.
You can practically design any type of game for the move (as seen with Killzone 3 and Heavy Rain so far, with many more to come this year).
So to conclude, this is proper gamers motion controller, whereas I would say the Kinect is definitely more family and friend gathering orientated. Don't get me wrong (and don't call me a fanboy!), the Kinect is super fun and a great laugh with mates (Dance Central is seriously cool), but I'm afraid that's as far as it'll go. If you just want something to keep the family busy and have a laugh, the Kinect is probably more for you (even though the Move has very similar party/sports games). But if you're a serious gamer looking to get more immersed, Move + 3D is where you wanna be!
Can't wait for Virtua Tennis 4! :)