With good fundamentals, any trigger can be shot well. I can break shots faster with a light single stage as I can feel the trigger as soon as I marry up and there is no movement at that point. Once you get past that, the follow through is the same with both. Some people try to run single stage triggers very light and they are afraid to marry up to the trigger. Since they are afraid to touch it, they wait until the sights are on target and then they slap it. The other common mistake is to take your finger off of the trigger like it is scorching hot as soon as the shot breaks.
Marry up to the trigger, break the shot, and hold the trigger to the rear with the same amount of pressure it took to get the shot to break until you see your impact. It's as simple as that. Pull weight, and one stage or 2 are personal preference in a comp gun. In a hunting gun or a duty gun, one could argue that a true 2 stage is safer because of greater sear engagement.