My first impressions were that it was pretty bad, but it got better as it went along. It's just the combat...
The game has alot of the basics in a Prince of Persia game, mainly the acrobatic stunts which are alot of fun, and swining the nunchuck to throw your chain as the Dark Prince improves upon that, but the combat system feels unresponsive at times, repetitive and could use a complete redo.
The graphics are pretty average to, but bearable, although the cutscenes look pretty good.
The best bits are the boss fights which combine timing with real combat, although there is less hack n' slash then fighting regular enemies, so it doesn't feel so bad.
Overall it's a good game, but doesn't use the Wiimote to the best of it's ability.