First of all forget the NA 20 man community. Take a look at the entire EU comp scene both regimental and group fighting based which has been running since the beginning of the game spanning thousands of players, ran tournaments cross module with €1000 prize pools and a fully running online match making system.
If we are going to include Cavalry then Shadey wins hands down but you probably don't even know who that is. "The best player" Should refer to the most skilled with the weapons in the game at deffeating his opponents, the best weapon in the game is the musket the best player with the musket is the best player.
You also have clearly never seen a sword + inf tournament. There have been many sword and bayonet tournaments, i've won about 5 myself we have had the top Native players playing as sword in these tournaments, Gibby, Maximou, Lapache etc I have beaten some of the top native with my musket and you want to talk about your 2 man na cav reg as if its relevant in this decade debate???
We've also had a Inf + Cav tournament with the top Cav from EU playing in at the time so if you want to count that sure I'm happy since I won that too