[kuzehanka]

This is all true.

Where jet and other non-uniform maps are useful is in highlighting small fluctuations in the value. It's less about z1 > z2 and more about z1 != z2 across the image plane.

A similar problem happens with datashader in histogram normalisation mode. It's great for highlighting small variations in the underlying density and revealing detail that you'd otherwise never see, but worthless for trying to compare one density to another by eye.

Horses for courses.