Comfort? Sure. Consistency? Yep. Less tension? I'll buy that too. But I didn't see an explanation of how it helps you keep the sights on the target until the bullet leaves the barrel.
Let me try to word it differently. Take a shooter with the best NPA you can imagine. His grip and stance are picture perfect as well, but he flinches hard a millisecond before the bullet actually leaves the gun. Until he fixes that trigger control issue, he will never be an accurate shooter, correct? Now take a shooter with a garbage NPA and a grip/stance that looks like it's out of Charlie's Angels, but the sights don't budge at all when he drops the hammer. This shooter may not be using "correct" technique and probably isn't very efficient, but he can hit whatever he aims at.
If we can agree that these are two very plausible scenarios, I don't think that it's a very big leap to say that the determining factor in accuracy is essentially trigger control.
Thoughts?