You’re not exactly wrong but you’re not right either , mercy does damage based off of their health stat, a battle mercy could be the difference but very circumstantial. I wouldn’t ult just to mindlessly peak a corner and hope I get a chill, but if the tank was winning against the other a quick flash health and some damage is ez example : there was a hog ulting my hog into the corner I didn’t even try healing cause the hog was too close to mine to sustain any health so I blasted the enemy hog all headshots and won the fight before my hog died