Yep. I realized that only after I saw the difference in the HP of the bosses.
Anyways, here are some logs from HFC HC: https://www.warcraftlogs.com/reports/BTXdpNtRC6akhPc4
Armory: https://eu.battle.net/wow/en/charact...thvia/advanced
I feel like my ring contribution is way too small. Taking Zakuun as example (https://www.warcraftlogs.com/reports...-done&source=2) I had only 1.14m total contribution, I feel like that's too low and I'm doing something wrong during the burst phases.