Bedrockgames
I post in the voice of Christopher Walken
Agreed. And I'll add that the Wizard is healing faster because he only suffered light wounds. The Fighter took more of a beating. If the Wizard had taken the same beating as the Fighter, the Wizard would be dead. Each recovers from a light wound at the same rate.
Since I am an adherent of what EGG defined as hit points in AD&D, I can't see how one can believe that recovery of mainly luck and stamina is equivalent to regeneration. And, as Mearls stated, is you think the rate is too fast, then make it longer in your game.
Because this is how regeneration worked in prior editions and go have always been a combo of things including physical damage. This rule changes go to be purely stamina and luck. In the past hip represented physical damage as well.