Has the Wii version had any reviews up yet? It wouldn't suprise me if the graphics were more than substandard and the controls just felt tacked on.
Until I hear otherwise I'd say stick with the 360 for the more polished experience.
Wii Review:
http://uk.wii.ign.com/articles/910/910269p1.html
I haven't read the review yet, but it scores higher than any of the other versions on IGN.