OK, here are the answers:
IMAGE1:
Left: 8KX
Right: HP Reverb
Note the different subpixel alignment for each. 8KX has horiontal subpixel lines, whilst Reverb has vertical
IMAGE2:
Left: 8KX
Right: HP Reverb
IMAGE3:
Top Left: 8KX
Top Right: HP Reverb
Bottom Left: Valve Index
Bottom Right: 5K+
IMAGE4:
Top Left: 8KX
Top Middle: HP Reverb
Top Right: 8K+
Bottom Left: Valve Index
Botom Middle: 5K+
Bottom Right: Original 8K
IMAGE 5:
Left: HP Reverb
Right: 8KX
This is a tricky one, but as you see, the SDE clearly shows both are 4K. The difference is the poor rendering of HP Reverb (using highest 3840x2160 rendering in Windows MIxed Reality Portal, and SteamVR SS 150%). Also, the contrast levels of the HP Reverb is terrible (probably way too high), which can easily be seen in any bright scene. Black pixels are killed by white surrounding areas. There is NO WAY I can take a proper photo of HP Reverb in RealOVirtual text chart having good looking text. The only way to get a more proper text with HP is to decreasing the exposure with lets say 2 levels in the camera, which makes the whites not being white anymore. I dont know if this is because of the panels, or just the fact that HP Reverb doesnt have any proper contrast/brightness adjustment.
In the case of 8KX, the PiTool Brightness/Contrast was on 0 on both, so default values.
Here is how HP looks slightly better than before, but thats just by having exposure waay down on the camera, which is not a proper way of taking TTL photos, I guess?:
IMAGE 6:
Left: Original 8K
Right: 8K+
