From the few I have seen, it appears that that in the early 1600's the British were using the long lever style trigger and the Dutch were using the more modern short trigger with a guard. Biggest difference in shootability might be in the buttstock, though. The English guns have a fishtail sort of stock, which seems to be rather short lived, while the Dutch have the club-butt style that persisted into the flintlock era with the Hudson river fowlers and some New England muskets.