Keep in mind that the dps increase is a theoretical increase. Personally I take Infinite Stars dps increase with a shovel of salt.
This might be because for me the theoretical dps of it from sims (aka the average from multiple simulations) is the top end I can get, with half of it being my average. That might just be because RNG hates me, as I see guildies with lower ranked Infinite Stars corruptions (both ilvl and actual rank) double my damage. Especially fun to see fellow raiders having 28 hits of it while getting 14 myself.
Kinda frustration speaking, but the point is there is no BiS, there is only Best in RNG rolls for triggering the corruptions you have.
Dark Legacy Comics showed it best:
https://darklegacycomics.com/716