After reading that, I went to warcraftlogs again and did some checks. I just randomly selected people from EU/US. I actually assumed I was way more off with my 38% statement but it turns out, that I am actually not THAT far off in most cases.
Wrathion:
https://www.warcraftlogs.com/reports...pe=damage-done - 36%
https://www.warcraftlogs.com/reports...pe=damage-done - 35%
https://www.warcraftlogs.com/reports...pe=damage-done - 35%
Maut:
https://www.warcraftlogs.com/reports...pe=damage-done - 30%
https://www.warcraftlogs.com/reports...pe=damage-done - 31%
https://www.warcraftlogs.com/reports...pe=damage-done - 32.5%
Skitra
https://www.warcraftlogs.com/reports...pe=damage-done - 39%
https://www.warcraftlogs.com/reports...pe=damage-done - 32%
https://www.warcraftlogs.com/reports...pe=damage-done - 37%
Xanesh:
https://www.warcraftlogs.com/reports...pe=damage-done - 32%
https://www.warcraftlogs.com/reports...pe=damage-done - 30%
https://www.warcraftlogs.com/reports...pe=damage-done - 35%
Hivemind:
Obv Stars is very bad here
Shad'har:
https://www.warcraftlogs.com/reports...pe=damage-done - 53% (lol) + 35%
https://www.warcraftlogs.com/reports...pe=damage-done - 37%
https://www.warcraftlogs.com/reports...pe=damage-done - 37%
Drest'agath:
Also bad here
Vexiona:
Not a good fight either since there are those very short intervals with Adds, but if you would go purely for boss damage, the result would be comparable to Skitra
Ra-Den:
Depending on Tactik, Twilight Dev is def. stronger overal, pure Boss damage is around ~20-25% Infinite stars (e.g.)
https://www.warcraftlogs.com/reports...pe=damage-done
Il'gynoth:
https://www.warcraftlogs.com/reports...pe=damage-done - 29%
https://www.warcraftlogs.com/reports...pe=damage-done - 26%
https://www.warcraftlogs.com/reports...pe=damage-done - 29%
Capace / Nzoth:
Not infinite Stars fights
So yeah, that are 6 bosses where it is very strong, 2 where it is "ok" if you do not go for logs but for progress and 4 where it is bad. And its not even just the trash bosses.
In the other fights feel free to replace "infinite stars" with "Twilight Devestation"
That does not really make it better, does it?