perhaps confused with the hp increase per player nerf?
Normal: (no change)
Nightmare: 85% → 75%
Hell: 95% → 75%
Inferno: 105% → 75%
Playing inferno now with 4 people premade will be a really big big payoff
Dont forget to calculate your awesome epic legendaries that you will find now soonish with imba stats!
So like most already said with the damage reduction nerfs things will be easier across the board no matter what your game is.