I don't think that would be possible with Move... Basically the only info you can give with the Move stick is how you orient and move your bat, and *not* how you actually move your body.
But I can reasonably assure Move will be much, much more realistic than analog, because there's a lot more detailed info you can transmit between the game and the controller.
Now, if you have a bunch of Move sticks and attach them to your body and do something similar to motion capture, that's another story but I don't think the time is ripe for it...
But theoretically possible... maybe next generation gaming...