Thanks Vitality!

From my tests of the RGBW sensor footage (from John Brawley's first footage from the Blackmagic USRA Mini 12k), when you start with a 12k BRAW file and scale it in the Camera RAW settings of Resolve from 12k to 8K, 12k to 4k and 12k to 2k the footage becomes increasing closer to ideal, for the lower target resolution you scale it to if you are going to play it back at the equivalent of the lower target resolution.

An example of when this might matter is if you are zooming into 12k file at say 9x for a sports event. If you are delivering 4k you would be better off scaling in camera raw from 12k to 4k and zoom into the resulting 4k file 9x, rather than zooming into the 12k file in Resolve, as at 9x zoom for the 12k file, you will see the blockiness of the 12k 6 x 6 matrix vs it will be smoother for the 4k file.

Even though you can see it - does it really matter is the image was in motion? If there was a shot from a movie and you were zooming into someone's eye 9x - sure. For a sports broadcast you would probably just stat with a 12k to 8k file and call it a day.

Example screen shots of 12k, 12k to 8k, 12k to 4k and 12k to 2k all zoomed in 9x below for reference.