I purchased a Wii day one in order to experience motion controls. I commend Nintendo for taking the initiative in radically changing the way we interface with consoles. They've not only proved that Motion control technology works (and works well), but they've also proven that it is very accessible and consumers are looking for experiences that branch out from the norm and bring families/friends together.
Unfortunately the Wii didn't live up to my own expectations and wasn't a device that could truly represent 1:1 motion in 3D space. As such, most of the motion control titles relied heavily on gestures, and even in Wii Sports Resort with M+, the games weren't deep enough and required constant mid-game recalibration. Knowing that you could simply flick your wrist without any real precision required was hugely disappointing, and ultimately made me lose interest fairly quickly.
Move is substantially better thanks to the added precision of the move hardware and the way it can track 1:1 motion in 3D space with very low latency. I can now play games like Table Tennis and actually have to spend hours upon hours mastering the controls -- I'm just now getting to the Gold Cup on Table Tennis and I've invested over 10 hours, and I still feel that I have more to learn with respect to the controls. Very small movements make all the difference in the world, and when the training wheels are off on harder difficulty settings, matches are ferociously intense and engaging. It's an absolute dream to play. I haven't been this engaged in a sports title since the Dreamcast days with Virtua Tennis.
I don't really even understand what's up for debate; the difference is instantly noticeable coming from WSR: Table Tennis to Sports Champions Table Tennis.
Hardware naturally gets better over time. Motion controls are an interface that can be executed in many different ways, and we are just now seeing other companies besides Nintendo explore the medium more thoroughly. Congrats are in order for Nintendo, because without them, we would likely not be seeing the Playstation Move which is an evolution of motion control gaming, but a very, very large one over its rival predecessor.