http://www.mmo-champion.com/threads/...eally-worth-it
Owlkin Frenzy does NOT proc from damage auras, which most fights in ICC had, such as Sindragosa, Professor Putricide's infection, Blood Queen. Most fights at the moment have a lot of single target damage, Halfus's dragon's fireballs, Valiona/Theralion meteors, Magmaw's aoe spit, Magmatron's flamethrower, these are the only fights I know of, so Owlkin Frenzy is pretty amazing, at least for the fights I have done.
Скорее всего речь идет специфической механике кастов у боссов, когда "АоЕ" урон на самом деле не является по настоящему АоЕ, но представляет из себя прямой урон.