Do hunters get skills that help them "de-aggro" themselves? I'm just curious, as you guys seem to be able to really pump out the damage when you want to.
There's an Endurance toggle that keeps the threat you generate lower (lots prefer to use that when in groups with a melee character). There's also a brief "click" power that greatly reduces your threat level but only for a few seconds (I think 10 seconds). The Legendary bows often have a modifier to threat level, sometimes that firing a certain bow attacks reduces threat a bit.
Heart Seeker (though it has a long cooldown), and one other bow skill (I forget the name, but it's only available when you've gotten a target down to 50% health or lower) do nasty damage, and if you have the Critical modifier traits slotted too, they can make really short work of things in a hurry. Chances are, if you're seeing a Hunter make exceptionally short work of something, they're probably using one or both of those skills.
If you fiddle with your traits for the various set (Bow Master, Trapper of Foes, Huntsman) you can have some fun figuring out just what sort of hunter you wanna be. Right now I've got a mix of things but I like being able to trap stuff well in-combat (esp. when solo), even if it's a -10% to damage. I didn't find going full bore with Bow Master to be very effective (it just makes it too hard to generate enough focus for special attacks, or to keep your power up).
Some of the mid-upper 50 level enemies are really HP sinks and even a Hunter can have a tough time bringing them down fast enough solo (so I rely on traps and the Rain of Thorns legendary skill/trait a lot, to buy some extra time). If I'm teamed up with even just one other player, any type, I feel a whole lot more effective
and I don't generally use traps as much as when I'm solo.