I remember why I built my first flintlock rifle. I had been shooting muzzleloaders since the 70s. Not very seriously, mostly I shot them for hunting.
In the 90s I started shooting with a local club. I got serious trying to decipher the vagaries of muzzleloading. I had a TC with a Green Mountain .50 it was a cap lock. Within a short time I became one of the top shooters in the club with this rifle.
There was a fellow in the club a, a good friend and a very good shooter. Every time I would best him, he would say "Yeah but you beat me with a cap lock". I had shot one of his flintlocks and didn't see any magic or difficulty in shooting one.
However I got tired of him telling me I beat him with a cap lock. Mind you he was a very good shot and our scores were always very close.
Finally I had had enough. I built me a .45 half stocked SMR. I worked up a load for it and was confident with it.
The first match I shot with it I bested my friend, and it wasn't close. So I asked him, "Do you like it better when I beat you with a flintlock.?"
The point is I shoot cap locks and flint locks I don't find one superior to the other, neither is going to get me through the pearly gates, and the only groups that count are those that are shot offhand.