I'm really surprised by your comments about Crescent Bay. I used a DK2 and a Crescent Bay back to back, and literally could not tell the difference aside from the headphones. Both were horribly screen-doory-y and pixel-y.
I own a DK2 and have demoed Crescent Bay several times this year and have a hard time believing this. Which demos were screen door-y to you on the CB? i.e. which specific scenes... please be specific.
I did both Crytek and Unreal's VR demos at GDC, the dinosaur island and the Hobbit scene respectively.