Will people who get 360 FFXIII be inclined to buy a PS3 for Versus XIII?

[TRios_Zen]

I currently own only a 360, and do not think regardless of how much I enjoy FFXIII that I will purchase a PS3 just for XIII Versus.

However, it is possible that the PS3 library reaches critical mass (FOR ME) prior to release of XIII versus, and that I would have a PS3 by then anyway.