The format between the Wii and the Xbox 360 are different, the optical sensor between the two is completely different as well. ((Wii and Xbox 360 are same-gen, Tezz. They have aproximately the same statistics in processor and RAM))
The Xbox 360 uses an optical sensor that can read DVD/CD's (blue and red laser) along with the Xbox/Xbox360 games (same laser type as DVD and DVD double-layer), the Wii uses an optical sensor that can read Wii and GameCube (white laser on both).