Very possible, most of my experience has been random que and I have noticed some doing much better than others. My Comment was mostly directed towards the peeps trying to argue that healer threat is always high and someone even ranked it above all dps.
Healers aren't suppose to have high threat, but they do have uniform threat. When a tank is building aggro on a boss he isn't worried about the healer pulling it, he's worried about the top dps. However, the healer does have small threat to everything when they heal, so those 4 adds that no one is attacking will go for the…