phoenix0870 Having checked out my Goovis G2 Cinego and compared it to Cinera, I can pretty much confirm what you said.
The OLED screens do not appear to have better black levels, contrast or colours than the LCD screens in Cinera.
The sharpness of Cinera is indeed noticeably better too. With the Cinego, text (and lines generally) appear slightly 'dotty' on the edges and are not clean, but on Cinera's screens these lines look clean and smooth. Not to say that Cinego's image quality isn't detailed and high quality - it is perfectly adequate, but it just lacks that extra sharpness/detail that can make viewing stills and high resolution video through Cinera something a bit special.
I can see slight screen door effect on Cinego, but then I can on Cinera too. Again, Cinego screen door effect isn't too glaring, but it is more obvious than on Cinera.
Motion smoothness is a tricky one, I'll have to watch more material before I comment on that. Neither headset appears to be perfect on that score.
The bottom line for me is that Cinego is very comfortable, portable and easy to use. If I was commuting or travelling I would probably choose it over Cinera, as it will fit in your pocket and is very easy to use in a confined space like a train seat. However, Cinera is simply the better overall viewing experience. So, at home, or if I was going away to stay somewhere for a while and had some space in my car for Cinera and the hands-free arm, I'd take Cinera to enjoy my video content at its best.
I still haven't received my final production Cinera unit yet, so I'll hold off until I have that before completing a full review (and cover the 3D side of things in more detail), but I hope this basic screen quality comparison helps.
I can't comment on a comparison with the Avegant Glyph or Royole Moon, but based on the similarities of their screen spec with that of Cinego, I'd expect them to be similar.