You can definitely get gold healing as hog and your healers can do nothing about it. Even if a mercy pockets a roadhog all game, if you pop out from a corner, get a kill while taking a load of damage, and then retreat while using take a breather you’ll absolutely outheal them if you keep doing that all game.
You’re not only preventing the enemy from moving in by killing them one by one, but you have one of the highest burst heals in the game.
I noticed this happends in QP alot due to how crazy the rank difference is.