Why does the Michael Jackson Experience game look different for PS3 and 360 from the Wii?

The PS3 and 360 versions of the Michael Jackson game look more “live” than the Wii version. There seems to be a more serious focus on live action and stage arenas, while the Wii version seems limited. They put more effort into development for PS3/360 than the Wii. It actually looks like a real music video or stage performance on PS3/360, but not on Wii. Why did they make it more advanced for these 2 systems?