Well, I just got an Oculus Rift today. I played Elite: Dangerous for an hour and can confirm that it has much better image quality in Elite: Dangerous. I would say that it's maybe less of a big deal than I expected, but there is 100% a better sense of scale, and far less of the aliasing and shimmering present. Oh, and this is all playing at sample 1.0x.
I imagine the issue is MOSTLY software oriented, but honestly, I feel like Oculus Rift has the better screen. I am certain that this will impact future multiplatform titles, although hopefully to a lesser extent than Elite: Dangerous.
Yes, the aliasing and shimmering is the big downside of Vives right now. And it's definitely software oriented. SteamVR Super Sampling helps.
The sense of scale thing interests me. I wonder if this is everyone's experience and what may cause it. Runtime? Aliasing?