Very surprised that it's playable at E3 and coming out next year. Surely Nintendo must be aware that this gives plenty of time for the competition *cough* Sony *cough* to evaluate and plagiarize Nintendo's ideas.
Look at the Sixaxis. Sony will need to understand it before copying it which will require some years of applied game development.
There is a difference between understanding the hardware and duplicating and understanding the decision that drove it and applying it. The Move shows a grasp of the first part, the Kinect shows the second.
The move certainly shows more understanding than the sixaxis. I'm not sure the Kinect was driven by real understanding and not just "hey, it's a new gimmick!".
Move and Sixaxis are two different mistakes.
Sixaxis is the Sony mentality of "put everything into the product. Check off all the boxes. We need motion controls because that guy has them. No real consideration was given into making MC work, it just needed to be on the box. The Result: Lair.
Move was just cynical duplication in form and function and relying on your assurances that it is "better" and that your tech is superior would sell it. The Wii Remote did very well, we need a Wii Remote - but better! The Result: People already had Wii Remotes, didn't see the difference. Didn't see the need.
Kinect was Microsoft saying "we need something not currently on the market that will appeal to a casual audience because the experience of using it is fun on its own." (you can argue quite easily that EyeToy isn't even in the same ballpark nor is it currently a factor in market) This is much closer to the Nintendo model used during the Wii Remote.
Kinect sold, and not just Kinect units but sold consoles. Move has found acceptance much harder.