One thing that struck my mind when they announced the delay, PSVR no has no competition this Holiday.
I don't know what the NX is but what I do know is it's a new console offering a new experience and it will be heavily advertised. the same applies to the PSVR.
It definitely wouldn't have done the VR any good having a new Nintendo console advertised heavily as a fun gaming device to families all across the world.
If there is one silver lining from this delay it's that psvr can maximise it's sales potential this Holiday.