Well, Vive will have volume in Q1 2016well it seems that there will be a very small supply at first for the vive and it should come out in dec while I think both the rift and morphous is late q2
Oculus is still Q1 2016
Morpheus is still H1 2016
Without enough devices out there the games won't sell. The Vive paper-launch in december can be mostly ignored, Q1 is when games on PC will be able to launch with competition between Vive and Oculus and enough devices so that the games are profitable.
Morpheus is it's own platform with no competition in that space. They'll want to launch with a large volume and coordinate with their own games releases and also third parties. They will make money with any game released for morpheus (which is not the case in the PC space where the hardware sale is the profit). Volume launch is critical.