The reason you never got agro is because you are for one not that high on the agro list and we have very capable tanks with a very well trained offtank rotation. And hunters can do what they want since they fake death a lot dropping their agro to zero.
From my personal expirience, playing a class that cannot drop his agro in anyway, the moment i move out of fear range and MT get's feared i get agro. Also the reason im placed where the offtanks are and dont get involved with totem killing.
Just remember this, if 39 people are feared and you are not, you will get agro. Even if all you did was bandage someone else.