Ok, so this is my experience.
While leveling, i go through Master. Once 70, T2 until 2set items.T7, T10 and finally T16. With full set clearing rifts in 3mins…
Which makes all other difficulties irrelevant. But mathematically harder to program/balance. Which was my point. Or atleast what i meant. 
But yeah, offcourse you can push harder with builds. Still, you can melt their faces and one damn licker can be instant death!
Atleast i wish they just make next Diablo
its damage be more REAL and within humanly possible to react and pop a health potion! 
It’s just silly doing billions dps…! I don’t like D3 multiplier system at all, in the end.