Hi, that was me that made that comment originally - however I completely put my hand up about 5 mins later to say I was wrong and that clearly there is a difference (check up a few posts). I had not downloaded the images to inspect locally. I took an initial cursory glance and formed an opinion
HOWEVER - to say one is technically better than the other is going to be very hard without equalizing all systems a little better.
The imaging resource comparometer is not using the same exposures, quite obvious in the detail in the fabric above where some tonal information (nevermind detail) is blown out on the K1 and similarly on the A7rii.
I've posted EXIF information to corroborate that theory a few posts up.
I also think that the comparison is somewhat meaningless as the lens used for the K1 is particularly weak relative to its resolving potential on a 36mp sensor without AA filter and a much smaller pixel pitch. To that end the lens used on the 645z isn't exactly pushing that sensor either.
In both cases I feel the glass is the severe limiting factor in making a good comparison and quite probably the K1 is more crippled in this regard relative to what the D810 comparometer shows.....
As a side note, I don't find the A7rii to be any better than the K1 or D810. Actually I don't find it as good. Look closely at the stitching near the models pendant and it isn't resolving as much detail. This is funny because in this situation the A7rii has been mated with the Zeiss 55mm 1.8 which is effectively like a mini Otus with very high perceptive MP resolving potential as per DXO.
Again, I suspect that exposures aren't quite the same as the A7rii looks to have a little blown highlight too...
For fun here is the A7rii EXIF...
Camera: Sony ILCE-7RM2
Lens: E-Mount, T-Mount, Other Lens or no lens 55 mm
(Max aperture f/1.8)
Exposure: Auto exposure, Aperture-priority AE, 1/30 sec, f/8, ISO 100, Compensation: +0.3
Flash: Off, Did not fire
Focus: Manual
AF Area Mode: Manual
Faces: One face detected [ click to hide ]
Note: the marked location may be wrong if the photo has been rotated, cropped, or edited. Also, it's the location when focus was locked, not when the photo was actually taken, so the camera or subject may have moved in the intervening time.
Date: August 17, 2015 9:04:03AM (timezone not specified)
(10 months, 27 days, 13 hours, 32 minutes, 7 seconds ago, assuming image timezone of US Pacific)
File: 5,304 × 7,952 JPEG (42.2 megapixels)
24,748,955 bytes (23.6 megabytes)