We're on Archi mythic and this is the first 16 seconds on Warcraft logs, left is our Hunter, right is another Hunter. Same ilvl, same 795 ring, and they deal basically the same amount of damage during the ring duration.
i.imgur.com/sx05lvL.png
So why is the right Hunter's ring popping for a million more damage?
Really desperate to find out what's causing this, I feel I'm being incredibly stupid?