Maybe it's unfair to compare this game to the xbox 360 version, but there are some glaring differences.
First off, it seems like the xbox 360 version is faster. It just seems a little more exciting even with just using the regular control pad vs. the wii-mote. With each shot, you could swing a few seconds before the ball reaches you and it will just register a weak shot instead of a missed shot. Not very realistic. Second, it seems like if you don't press a direction for which type of spin you would like, it just randomly picks one for you.
The graphics also leave something to be desired. I know that comparing the graphics of the wii to the 360 is unfair, but it looks like last generation at best. And I know that this system is capable of good graphics.
I really wanted this game to be good so that I could experience a more interactive ping pong game than the 360 version, instead, I will be putting this game back in the mail.