Double tap with a revolver is faster and more accurate than a semi. I have watched some serious fast semi shooters but they couldn't match the first two shots of the really skilled revolver shooters.
I watched a young bloke from the NT go prone and hit 6 plates in 2 seconds firing 3 shots before he hit the deck. Amazing stuff he was a freak . He wasn't awarded the time even though the plate was on the way down. The stopper was square cut not angled which meant the plate had to be more than half way down before the stopper/lock missed the plate.
You are right about the trainers/training. But some people should never be armed or used in those areas. Also there is little to no thought given to the fact some handguns are way to big for some hand sizes.