Yeah, they can't compare, because we don't have anything set on stone about next-gen!
As far as we know, Sony or MS could be talking with the creators of OR to bring compatibility.
Most likely, however, is that people who are interested in Oculus Rift have a high-end PC, and thus, have no need of next-gen consoles (from the rumors we have as of now). And lets be honest, MS has IlumiRoom (that device that projects visual effects into walls), and Sony has some kind of technology that allows two people to play splitscreen with the complete TV screen through the viewer's perception of the image (I'm not sure if I'm explaining myself well enough).
Oculus Rift might be PC only, but it doesn't mean MS and Sony aren't working their own tech, instead of only improving the existent one.