Wii Reviews?

I've noticed a real wide ter among all the reviewers for Wii games- moreso than any other console, I believe- can anyone tell me why this is? Some games get between a 4 and an 8! Is it b/c the reviewers are "" and knocking the wii from the start? Is it b/c they just don't get the wii? Anyone with an opinion, please let me know- also, What are some games you've really enjoyed that maybe didn't score so high on the reviewer's sites? thanks!