Am I wrong I was sure it was soft developed by peeps like the one doing the indie games.... not something worked out innitialy by MS????
anyway I think it's pretty good for tech demos.... actually it's the best and most entertaining tech demos I have seen in a while.... usually u are just allowed to see a trailer of something... not to try it and play with it like here in a nice looking visual display....
I don't know what you expected.... but it was exactly as I thought... and for the scan if it doesn't work because of the light it's your fault.... it's like taking a picture if the lightning is bad don't expect your picture to be good.... natural light is a no go for kinect.... remember kinect traking can work in total darkness.... the visual aspect of the image is up to your light settings and calibration...
all my scan worked well once I figured out how it worked and what was wrong... it actually helped my adjusting my living room set up.... so yeah those are not great games to have fun for hours with.... those are tech demo and they do what they are suppose to do in the right fashion IMO