Here I cropped one of the critical areas from the above image at 100%. You can see the 'clipping' or halo-ing (or whatever you want to call it ;o)) effects around the figures. To me, it looks quite awful... and you see it's not easy to correct.

Here the nasty effects are actually quite moderate because there's lots of detail around, but they look much worse when there are large areas without detail like skies or clean buildings.

Verdict: for me, the Fill Light and Recovery sliders can be used as a quick touch-up for small sized web images where the flaws can go relatively unnoticed; but they're not ideal for high quality images aimed at showcasing or printing your work.

We do not see things as they are. ǝɹɐ ǝʍ sɐ sƃuıɥʇ ǝǝs ǝʍ