Good question, no idea. I perceive this thread to be ploughing the same water as similar threads previously.Do these sales include standalone headsets like Oculus Quest and Oculus Go? If you dont remove these from the pool you'll have an inflated picture of the install base ready to play high end PC games like Elite. Also psVR would likely need to be removed from the pool since it lacks the power to display Elite in VR.
Where does that leave us?
BTW I wouldn't write off any platform over 'power' as they're always superceded by more powerful versions.