Truth is that without a few genuine 15th centry English Longbow men and step horse archers shooting it out on live TV for our viewing pleasure this will always be an academic discussion...

Both areas had men trained in the use of their particular bow type from childhood which would mean most would be proficient and accurate and a few would become truely exceptional.

Saying that the english bowman's skill was limited to hitting the broadside of a barn (frequently and at long range) because they where used enmass is a shortsighted as declaring step archers inferior because they use little bows and ride ponies...