You're way off base with this one. Cleared it on first day after 4 hours in a PUG. Only boss that was a problem was Lady Inerva.
Shriekwing - 1st attempt
Huntsman - 1st attempt
Sun King - 2nd attempt
Artificer - 2nd attempt
Hungering Destroyer - 1st attempt
Lady Inerva - 5th attempt
The council of blood - 3rd attempt
Sludgefist - 2nd attempt
Stone Legion - 2nd attempt
Sire Denathrius - 3rd attempt
I'm disappointed in the lack of difficulty but do enjoy the fights in terms of mechanics, looking forward to mythics.