I was surprised to see those soft gradients get picked up as detail. The mask visualises it well the gradients are thick solid areas of sharpening. The in focus areas have less detail it seems.
Can’t say I can really see the micro contrast in that screenshot. Unless the contrast is very micro. Do you think most gradients will be detail to the algo if the contrast and length of transition is such that adjacent pixels differ enough. I mean even a synthetic Gaussian type transition?