GoNintendo has released two scans of the Wii version of Sonic Unleashed.  The screens are compared side-by-side to the Xbox 360 version of the game and while the graphics of the 360 version is obviously better looking, the Wii version does not seem that far behind.  However, the levels in Wii version are considerably…browner.  I have no idea as to why there is so much brown, while the 360 version pops with vibrant colors.  Check the link below to see for yourself.

Sonic Unleashed Wii Screens at GoNintendo