I finally had a chance to get into this the past couple of days and tried bowling, tennis, and skiing. Overall I'm very pleased with this, but as I mentioned in my review of the demo (above), the graphics aren't that great, especially the avatars (modeling, body shape, facial features, textures, etc.). But this may be a concession the developers made in order to allow for the customization. Of course when playing, it's difficult to notice texture and lighting issues and whatnot in the environment (I mainly notice issues in the animations before and after the matches), but I seem to recall Sports Champions 1 looking a bit better than this. At any rate, not a deal breaker since the real attraction here is the motion gaming, which has been implemented quite well once again.
I breezed through the bronze cup in tennis and bowling and ran into my first challenge with the bronze cup skiing boss. Oddly, I three starred it in my first attempt, though I lost the race. After several restarts, I realized what I was doing wrong, and learned the course much better, and finally finished first in order to unlock the silver cup round. And after playing some tennis silver cup matches, I realized how deceptively easy the bronze matches were (it was almost impossible to hit the ball out and the AI hit very softly in bronze), though the silver cup matches were still easily winnable, just not as easy to three star.
One other slight disappointment, there are only 6 matches (including the challenge round) for each cup tournament (at least in silver and bronze) instead of the 11 there were in SC1.