Having seen effects vs. the settings in the videos, my conclusion is that with the luma and chroma settings in my example, the gradient reversals are so bad that a fully minimized edges setting is necessary to get rid of them. Possible, I suppose. The difficulty with trying to examine the effects is that when you zoom in to see better, you change the effects. Catch 22.
Edit: Maybe I am misinterpreting what happens when you zoom in. I dunno.