As far as we know, MS is still using very badly Kinect's potential, properly used it could grab half of Wii Balance Board's market.
Sony is conservative for Move, old EyeToy-like games plus attempts at making HD hardcores accept motion control. It could be an intelligent move, as while Kinect offers what Balance Board can't, Move is very similar to WiiMote plus WMPlus, so a direct competition with it couldn't give great results, while trying to get market segments relatively untapped by Wii, or where Playstation was already present, so not starting from scratch, could pay a lot better.
MS must show us great games for Kinect that are better played moving the whole body and without a controller in our hands, then Kinect will become a new Balance Board.
