Let’s compare two heroes on paper genji a hero who has barely any damage on paper and Ana who has superior healing than mercy and should be superior.
What you don’t calculate about genji is how his damage is delivered. He has a skill that deflects others damage which uses the enemy while some utility based kits can also be used against. Swift strike which resets on a kill allowing chain damage and dragon blade whose range allows him strike down multiple targets at the same time. This can’t be seen on paper you have to play him a ton to understand.
For Ana yeah she a ton of healing just one thing she has to stand hardscoped to keep her rate of fire and has to get each and every shot. The best of the best could probably get 85-90% on a extremely good day. She just can’t we aren’t gods of aim and neither are enemies going to ignore a hardscoped to do her job.
It extremely hurts when Jeff just says sleepdart is enough to be a escape tool. It’s on paper everything is on paper overwatch is balanced. But we aren’t playing the game on paper.