Gehrhard, I agree that flinters CAN be slower. In no way do I agree that it's a foregone conclusion that they are, your videos and other shooters' intuitive feelings notwithstanding.
I actually agreed with you back when all I shot was my T/C Hawken with a replacement percussion lock from L&R - it is fast. But I bought a flintlock smoothbore from NorthStar West a few years back and that changed my mind altogether.
Granted, a flintlock MAY require more tuning than a caplock. But a properly tuned flinter loses absolutely nothing in ignition time to a percussion gun. And I've actually found the flinter to be more reliable than my caplock on occasion. Just FYI, the cap gun has the replacement lock, updated triggers and a replacement barrel from Green Mountain. So all the components there are very high quality. The flinter still easily performs neck-and-neck with it on ignition time.