Guild Wars 2

In a dungeon what determines who gets the most mob aggro?

I read one post that said the toon with the highest armor and
toughness gets it. If this is the case then that explains why
as a warrior I am getting swarmed when I try to get into melee
range sine I have a lot invested in toughness.

My response to a need for survivability has been better armor
and more toughness, but maybe that is just bringing me more
trouble. (?)

proximity is definitely a factor, and damage done to some extent. Most melee mobs go for closest targets, while ranged mobs have… funky aggro. I find myself being sniper bait a lot in CM on my necro, but not as much on the guardian shrug. You’ll want a high-cc/survival build if you fully intend on meleeing.

Ranged mobs seems to like low health targets…. so proximity and stats as well as health are part of it.