Quote from Paradise;1210051:
being a regular gunner (i'm more an alch lately) having almost capped str/int (missing 30-ish on both maybe?) from skills,
i can tell you, that you need a HIGH DAMAGE to make gunner useful, if you don't kill your enemies in 1-2 shooting rush, you will have trouble (YAY FOR GETTING ALL THE AGGRO! ) .....
Sounds like a huge problem only if you solo everything (or don't have AoE pets to compliment the skills). I personally have access to both an array of AoE pets and friends to back me up if things go sour. Not that I have any intentions of using gunner outside of raids with my low stats compared to what I can do with my bow for the time being, but yeah. Also if I did have a multi aggro problem I could just use auto weapon swap to switch to bow and crash shot pretty quick. Of course, things like everything I mentioned in my post, just like yours, depend on your individual character development (including equips) and access to certain resources.
being a near end-game archer I can tell you for sure that the use of my archery at raids is horrid, and guns even with low stats are far superior (of course my enchants come in to play for my use of gun. It is true in some cases that this is not the case for everyone)