Funny you should say that, because I know some users who played Punch Out!! without a problem using motion controls. It entirely depends on where you placed your sensors.
Yet Skyward Sword won many awards and was regarded as one of the greatest games of all time, according to a mod from BMGF.
Kinect, along with Playstation Move, always have inferior motion controls compared to the Wii. Seriously, I've seen a few let's plays using Kinect and Playstation Move, and the players themselves are having serious trouble on those games.