Triggers are usually judged by just weight. Which I find interesting. I personally don't care less about trigger weight. I like consistency, smoothness and predictability.
I do shoot a G17 with a 3.5lbs connector and some minor polishing on the internal parts. Trigger breaks at 5.2lbs. I compete in Standard and Production. I can pretty much snap it right back with either hand and not disturb the sight picture, because I like to practice a lot.
It's just a matter of learning and getting to know your trigger. Once you know the trigger, weight makes no difference in how fast you can pull it without moving the sights (= speed + accuracy, which is all that matters).
Also, a Glock trigger has so much slack, once you take out the slack and learn where the break point is, it will feel like a 2-3lbs. trigger.
What I like about the Glock trigger:
1) Every pull is the same
2) It is (like Flex pointed out) almost two stage, which means you can really prep it when transitioning to the next target. That way you take up all the slack, making it feel like a 2lbs. trigger.
3) Reset is short and strong
Look at Eric Grauffel or Jerry Miculek. Eric shoots a 3lbs. trigger in Open and Jerry shoots about 6lbs. in Revolver and gets faster splits that almost anyone. Both guys are very accurate too.
As usual, it comes down to practice.
BTW, Flex is spot on. The first shot of the other guns that compete in Production should be 5lbs. as well.