I felt a little surprised, and yet not too worried about it either ...
With the exception of Guitar Hero, the best playing and/or selling 3rd party efforts on the Wii have been games where there was a focus on producing an excellent game for the Wii. From what I have seen of Ubisoft they're a very good developer but all of their games feel rushed and lack polish, and I suspect that if they're focusing on a PS3/XBox 360 version of a game the Wii version would feel even more rushed and have less polish than a typical Ubisoft game.
The surprise comes from the fact that I would expect most publishers to launch multiplatform games with a Wii version from now on because of the hardware sales.
Ultimately, I'd be happiest if Ubisoft focused their efforts on producing Red-Steel 2 to their company's best ability and (hopefully) announced a game like Beyond Good and Evil for the Wii rather than producing a third rate port of a game which may have seen its best days years ago.