The more I see about Kinect, the less I like it (except some things I believed since the start it could be the best control system for). But I can put my tastes apart and say that IMHO MS did its sums: Sony is focusing its motion control on more hardcore games, Nintendo wants to get some hardcore market it overlooked with Wii back, the end result is that some shares of the casual market could be made available for MS to grab.