Why even bother showing you sims when you don't want to respect the time and effort someone do to actually prove something. While you come here and are excusing overpowered stuff in Legion, but in BfA there is no such thing when it's in front of you. Overpowered Artifact gave you what, 8% damage increase? While corruption do this at max ilvl:
Oh wait, like, 36% of damage still? See that wooping 8.8% the extra item level do? see the 36k ish dps infinite stars rank 3 times 2, + 1 rank 1, + lash of the void do? So still 36%. 185 corruption, negated with 135 resistence, so 55 total corruption. Seeing the extra gear also helps with extra surviveability, it just becomes easier to have higher corruption. I am at 48 now, no problem whatsoever. It shows at 450 item level, but the lowest is my live character, the one above with higher item level, no corruption, and the one on top is max item level, and the corruption.
Here it is with 3 times rank 3 echoing void:
Bit less dps, but still 31%.