Spot healing brush tool luminosity not working as expected?

Question

I have a question about the content aware spot healing brush tool:
The normal and replace mode work just fine as expected... the color mode does indeed a fine job fixing the color cast of i.e. small green or purple lens flares, by picking up the surrounding color.
The next mode after color, called luminosity, should work in the same fashion: it should pick up the surrounding brightness (luminosity), and adjust the relative brightness of the area to be patched (i.e. reduce the brightness of a small lens flare, and preserve the texture underneath).
Instead, luminosity doesn't work much different than the normal mode, it creates a new texture (based on content aware or surrounding area), and thereby destroying the original texture, instead of just fixing the local brightness.
My question for Adobe: is this behavior intentional? or was the luminosity mode "overlooked" by accident?

Answer 1

Here are some examples of how the brush is working in a real world example:
As I have mentioned, normal, replace, and color work exactly as expected. color in LAB mode works even better than in RBG mode.
what is not working as (at least by me expected) is luminosity mode (even if the color mode brush is used first). I thought/had hoped for that the luminosity mode would work some magic without creating new textures (the color mode is only very very lightly adding a new texture).
I just wanted to hear what the logic behind this mode is... (and possibly find a 1-2 click tool to fix those lens flares.)