I don't think the vive and ps4 vr are "the same thing".
They are. The Vive gives you a bigger tracking area, and can put out a higher resolution image, but they are about he same. One of the other engineers at work has the vive, and he thought the PSVR looked just as good most of the time.
The advantage for the PSVR is the cheap price, and Sony can get more games made for it. I think Sony has more units out than the vive and the rift combined now, and it has only been out for around 7 months.



