PSVR only has 1 1080p screen but uses a special RGB panel to reduce the pixel gap for Less SDE (Oculus and vive dont have this instead they render at 2k)

Sony will also use "reprojection" to get 60fps to render at 120hz but Its hard to gauge how well this system will work. The London Heist apparently runs at 60fps reportjected to 120hz (Source: Digital Foundry) and people often regard this as PSVRs best demo so i have faith. 1080p/60fps games like MGSV, TLOU, Metro Redux look pretty good graphically so if this is what we can expect or maybe a little less, then im happy.

Rift and Vive render at 2k/90fps while PSVR does 1080p/60fps, this compensates for PS4s weaker hardware and should allow for graphic fidelity to be about the same (minus the fps and res obviously)

I think the exclusives for PSVR will be more interesting, but PC VR will have more support. I mean how could it not, there's gonna be tons of "unofficial support" with mods for 2D games, not that they will provide optimal experience, and then there's gonna be demo's. I will buy both PSVR and a Vive if it also can play Oculus games. Vive costs the same price as Oculus with shipping and taxes to my country, so if the superior PC VR headset can play all the PC VR games that'd be great.

In which country the Vive and Oculus Rift have the same price?

Sony entred the console market when Nintendo was already the top dog for more than a full console generation.

PS4 support >>>>>>>>>> PC support

Mobile.. Mobile VR will have the most support and be the widest adopted. Right now Samsung is about to put a FEW million Gear VR headsets in peoples hands for FREE.. Plus LG, HTC, and Google will be bringing more VR units to the market.

Mobile VR will be the initial VR winner.. its the cheapest entry.. Far more people have PHONES capable of VR then they do a PS4 or VR ready PC.

Most smartphone VR is vomit inducing crap when it comes to games - I think only one that is half decent is Samsung 's GearVR, and that's cause it has Oculus tech.

But, there's bigger problem right now (though it seems there are some companies hard at work to come up with solutions) and that's complete lack of motion tracking in smartphone VRs since inside-out tracking (or outside-in with external cameras) is not as easily achievable as with fixed platfomrs like OR, VIVE and PSVR.

GearVR is the leader here.. and will continue to be..  Snapdragon 820 is VR ready. and Oculus us working on motion tracking for mobile. It will BE the most supported and adopted.. Samsung is set to give out a few million units for FREE alone this month.

Also I have a feeling whatever Google's hardware version coming that is coming, will be good also. And have LESS of an entry fee to the VR market.. 

The PS4 will likely get more AAA and AA VR game support while PC will get more indie support.

Depends on what kind of support you mean. In terms of quantity, there is absolutely no contest since PC will win this hands down. I'd even argue that there is currently more gaming content for PCVR than there will be for PS4 in years. Not even counting all the VR video content.

As for highest quality content I absolutely can't say. For PC it would be very easy for developers to adapt their games to VR since they don't have to give any shits about the hardware needed to actually render it for VR. But will they bother?
Though the same can be said for PS4 too. Will developers bother to painstakingly adapt or develop their VR games on such a limited box with an even more limited VR install base? They could just as easily release a normal game and have less hassle and make more money.

It's certainly going to be interesting to see what happens with VR on console. While I have no doubt in my mind that VR content will be steadily flowing on PC for years, there is a real possibility of PSVR going the way of the Move.