Not a surprise and not a knock on Kinect either. I have both and, properly designed, Move should always trump Kinect for something like Tennis - if you're after more realism vs a more fun, casual approach.
Kinect can definately do better than implied by this review, though, so the game clearly shares a fair bit of the blame. Kinect Sports table tennis is fine, is not as accurate feeling as playing with Move in SC.
Kinect = best for body motion based sports, dancing, excercice plus whatever else they dream up that works well with the system or more casual, tailored sporting experiences
Move = best for sports/games where you would hold something exactly like a handle in your hand (tennis, table tennis, swordplay, etc) plus pointing based stuff (shooters, etc. a'la Killzone 3) plus anything else they dream up that works well and it better supports a more realistic representation of suitable sports. Having tried the Kung Fu game it clearly isn't as good at motion sensing of the whole body.
Both are good and I've had a lot of fun with both last three months or so, but in a tennis game that's supposedly trying for more realism vs casual fun Move should always trump Kinect. It's just down to the basic design of each and doesn't reflect a flaw in Kinect at all.
The way I see it both can support something like Tennis but Move should have an edge just due to its basic design. Similarly they can both support body motion based stuff too but Kinect will always have an edge just due to its basic design.