From my point of view the entire stat squish is very wonky.

1-50 your stats seem to be the same aka tanks still have about 9k hp at i130, but the dungeons are A LOT easier, stuff dies really fast.
50-80 it gets weird, the growth slows down a lot.

I had the first Nier raid the other day and all i could think was "omg ... this takes forever i should've cheesed the ilv" and even if dmg dealt is subjective i dont think it was just "bad or new players" also on another note it felt like i was taking more dmg as well.

I think SE is aware of this and gave the "epic echo" because of how their squish works ... well that or they want to preserve the original difficullty in roulette, which makes even more ppl cheese ilv.