Sorry, but I had to write about this total nonsense to straight things out.
PhysX is a PC exclusive feature (PS3 supports software emulation only).
Only the PC version will support PhysX, and not only because the 360 has an ATI GPU, but also because its hardware could never handle it.
All console games suffer greatly in terms of texutres, LOD, AA, resolution and framerate, and you want to add PhysX?
He who wrote this should get some reading done.