The behaviour of the selective tone tool has been discussed in a few threads in this forum. Compared to what Lightroom’s sliders do, PhotoLab has a softer roll-off and therefore a broader reach of respective tonal bands. This means that lowering highlights often necessitates some raising of the midtones. Find more about selective tone corrections in this page.
ClearView is intended to act on haze. This tool has a fairly wide scope, as you have discovered.