There is a lot of confusion about Resident Evil 4 for Wii being edited. This is apparently not true:
Remember Resident Evil 4 Wii Edition and the original are CERO D games so they have been toned down in comparison. To get to the bottom of this I sent an e-mail over to Capcom asking if Resident Evil 4 Wii Edition would be censored in the USA and here is what they had to say.
The previous versions of RE 4 had these minor differences as well (US vs Japan), so nothing has changed.
If nothing has changed then Japan is getting the same censored Gamecube version and in North America we will be getting the same uncensored content in the North American version.