Very cool! Can't believe I missed this post until now.
These look really good – comparable to GFX IQ for all but the f/11 shots.
RF 24-105 is the weakest (not counting f/11s) – reminds of the GF 23 on the GFX 50S/R, which is very sharp at 1:1 but falls apart at 2:1 zoom.
RF 85 f/2 reminds me of the RF 50 on my R. Wow.
RF 70-200 is insane. This bodes well for the 28-70 and f/1.2 primes.
RF 100-500 looks as good or better than the GFX 250 + 1.4x on the 50S/R.
But honestly all the f/11 prime shots look like subject motion blur. Once those things are on the R5/6 with the IS and IBIS exchanging information, and with animal eye-AF at work, that's going to make a big difference.
But on the f/11 shots, just look at the bokeh on that monkey. If I couldn't view it at 1:1, it would be hard to tell it was shot on a sub-$1000 lens instead of a big white stopped down some.
And look at the low noise at ISO 1600 on the monkey shot in the bokeh region. I can even lift the shadows some on the JPEG and the noise is not bad. On the R, even if I had the RAW, it would start to get really noisy when raising the shadows at that ISO.