Man, that is stupid as hell. Playing under 50% require more skill than not getting below 50% HP for the whole run? If this doesn’t sound stupid to you- you are beyond help.
Your understanding of skill is absolutely wrong, I can’t even process that.
If you have two players on Legendary run and one was never below 90% of his HP and you were constantly below 50%- the first player played much better than you- you wasted your HP, you can’t dodge effectively, you can’t block, you waste healing mats, you are risking being one shot by boss (who takes 50% of your HP with most attacks on Legendary), while he can maintaint his health.
This is so wrong I am surprised you can play even Recruit in this game.