Sadly, 430+ with 65 neck with 3, rank 3 essences. I have an alt priest at 420 and most losses are me ooming. That’s the issue with disc. More gear means more damage which means less active healing… which means more time to dps…
Even then, there is likely a big difference from a 430 priest with random azerite traits, even compared to my main priest. Though… I’m not doing much pvp on arena.