best pictures are: B-B-A-B to my eyes on my computer screen (27" iMac, 5k).
According to your description, that is the Kowa. Yet your words say the mini Razor was best...
I felt mini Razor was better under one condition at one distance. I'm refraining from stating my opinion overall of the two.
The 55mm Kowa’s only real competition comes from high end 65mm spotters. So I put it up next to the 65mm Vortex Razor. What i found was that the Kowa was better in every aspect. Brightness and resolution were all better behind the little 55mm Kowa. Even with the Razor’s new wide angle eyepiece the field of view and eye relief were so close that i could not see a difference. The clear winner here was the Kowa.
I always like these "blind" optics tests. I applaud the OP for posting it. We all have bias whether we admit it or not, and not knowing whether the optic has a Z, L, S, or whatever badge on it makes us trust what we see, not what we think we should see when we see the branding. I'm as guilty as anybody and I admit it.
I also agree it's difficult to digiscope an accurate representation of what your eyeballs are seeing, but once again I applaud the OP's effort and would like to see more of these "tests" actually. I've been fooled a number of times by blind tests.