I'd say that for a normal person, semi-autos are likely still faster if you're trying to be at least somewhat accurate. Jerry Miculek isn't what I'd call an "average shooter"...Couple of things...Jerry Miculek proved you can cycle a revolver faster than a semi (I'm faster on steel plates with a revolver than a semi)...With a revolver I get all my nice brass back.
Worst thing with revolvers now is the price has increased dramatically due to the use of "plastic material in semi's (cheaper production cost) and because not as many revolvers are made now since LE have switched to semis; so economies of scale are not in effect.