Which is what Fatebringer excels at. Firefly will either kill the surrounding adds or stagger them so you can follow up with another firefly shot. There are hardly any encounters where a VoC excels over Fatebringer other than solar burn. Who cares about 27 VoC bullets when you can get more done with 12/13 with Fatebringer, especially with Outlaw.

A 365 Fatebringer will one shot vandals and legionnaires and kill or damage surrounding adds, and a VoC will most likely require 2.

And you're nuts if you think The Devil You Know is somehow better at PvE content than a Fatebringer. Any weapon with Third Eye is only good for PvP, and you'll have no argument from me that Fatebringer is an average weapon for PvP.