Guitar Hero 3 for which console?

Does the Wii version of GHIII utilize the motion sensing capabilities that much or is it really just the same as the 360 and PS3 versions?

And I have only a Wii & 360, would it be more worth it to buy on a higher-end console?

I'm not 100% sure, but I think the Wii version is just as good as the 360 version and costs $10 less?
That is... other than online, because the 360 version's online is easier to use.

Somebody here might know better than me though.