http://www.next-gen.biz/news/kinect%E2%80%99s-japan-sales-detailed

This should shouldn't be a surprise: Japanese play spaces are very small.  In Japan, the sales kiosks include a tape measure for play space requirements.  Even Americans are having trouble finding the space for Kinect.  However, it's undeniable that Kinect is awesome.  Hopefully, my cronies over at Xbox will find a way to make smaller play spaces viable for certain types of games...

~s