No.
That would be like Nintendo releasing NSMBWii on the 360 in hopes of luring people on to the wii to play Mario Tennis, or Microsoft releasing Halo 3 for the PS3 to lure over people to play ODST.
FF13 is a major game, which lots of people would be willing to buy a console for. Versus 13 is a spin off, and is going to have, at most, a fourth of the sales and appeal of FF13 proper.
Wii has more 20 million sellers than PS3 has 5 million sellers.
Acolyte of Disruption