Yes and no, Valve have been working on VR for years longer than oculus, the rift actually incorporates a lot of tech (and staff) stolen/borrowed from Valve's prototype back when Valve said they weren't going to be releasing a product
positional tracking via IR as well as the dual screen approach were both adopted from Valve by Oculus, it also shows in that Vive will be to market sooner than OR and Oculus are still playing catch up
however, OR have the money and are working on lots of exclusive content... basically at the moment it is almost looking like you are going to need both depending on what games you want to play
and I still have reservations on whether the resolution is really high enough, it isn't a big jump from 1920x1080 to 2160x1200