Probably this will be built for the Wii (which outsold 360 despite the 360 have a much larger base at the time) then downgraded visually for the PS2 and upgraded visually (textures) for PS3/360.
Actually, I expect this to become the norm for movie license movies. 90% will probably sell best on Wii so why goto the expense of have the 360 or PS3 as the lead platform?