Wow... OK dude here's the deal, I don't like ubisoft's work at all, the last game I truly enjoyed from them was sands of time last generation. And no, even though their games might appeal to a certain crowd they are not polished, not by a mile when compared to game like Metal Gear Solid 4 or Super Mario Galaxy.( IMO!!)
But that's not my point. Ubisoft's work in the casual field has been extremely lackluster. MJ the experience is exactly the same as Just dance for the Wii with MJ skin. There's not much difference. For the kinect version, just compare this with a game called dance central and you'll see the vast difference in quality. We haven't seen the PS3 version, sure, but we can't say whether it will be amazing or not, I'm just putting an assumption.
Finally, when have I ever said anything about me being the most educated person on this game? I'm going by what I see. And i'm not really liking it. The kinect version is not bad, but it could have been much better AT LEAST in the presentation area.
Just Dance for Wii-
http://www.youtube.com/watch?feature=iv&v=-KC3pHw-btQ&annotation_id=annotation_826522
Dance Central for Kinect-
http://www.youtube.com/watch?v=Y-iKWe-U9bY
In case anyone's interested.