The Oculus Rift has grown into a formidable technological force, even before it's publicly released, now that it's been acquired by Facebook. It will probably be a direct competitor to Sony's recently announced "Project Morpheus" VR system, and you would think the whole scenario could turn into a PlayStation vs. Xbox battle, complete with flamewars, fanboys and public sniping.But for now? VR is so new, these companies see themselves more as friends than enemies. Sony's Shuhei Yoshida spoke to Engadget...