Yep, they have a prot pala, shadow priest and unholy dk with no draught all survive the darkness phase and a warrior falls off. xD
But yeah, ofc the specific setup (3 tanks with a pala, dk with no draught, shadow priest no goblin etc.) seems to not be as "good", maybe they wouldn't jump 10 ranks if they had perfect roster but for sure would take them less time than inventing 3 tank strat and a strat to deal with darkness phase with no-knockback-cheat classes. Meanwhile a rogue can just cloak it and never move an inch.
I think they had a priest go scout the corner for the ball judging from the minimap but ofc stacking for the ball is a dps loss, I watched the dk POV video and he's literally running back and forth between illidan and the balls, and in the end he dies in p3 not even from his own fault but from getting shitty things like double focused dreadflame last one just before obelisk explosion.
Tbh it is a super shitty boss when 2 months after tier release still half the specs are not welcome to it. Was there any melee in any kill that wasn't rogue / warrior / dk / dh? Someone already disproved the "enha" shaman wasn't enha he was resto. What about the lone WW monk, was he actually dps or again someone logged out in different spec while updating wowprogress? Ret pala? Dead and buried despite having immunities. Ele shaman? Doesn't exist. Feral druid? Don't think so. Any tank that isn't druid? Lazel killed it with a Monk, and Blueprint had 2 guardians alongside anyway, but generally it's just a wall of bears.