Vampiric Cave Bat 43944206 53.6 %
Tortos 35742333 43.6 %
Whirl Turtle 2246921 2.7 %
You did half of your dmg on the Bats with Divine storm. And 2,7% on the turtles. If your raid can afford having you beat the boss only (and the bats en passant) it's okay.
If you check the logs from Lethora, you wonder how bad other players are in his raid.
The only statistically working numbers are the raidbots numbers, since they just work with lots of wordoflogs fights and give real life data and no simulated numbers.
The test for damage we did this week in our guildruns were full rampage on Tortos and and the bird on pull, with pre potting, hero after roughly 3-5 seconds etc. With no adds/evasion to do we had our rogue beeing 1/3 above me, the DK with similar gear 1/4 above me (melees only).