there is not good or bad archer, there are only trained archers. And others factors can make you good or bad : for example , this morning, I made 16/2, whereas sometimes (even often) , I shoot my teammates because I'm not awaken (or feel like drunk). And it depends also of the wpf an archer has in archery (bagge has 170 , and Robin has 185 => cannot compare it ). Also, every archer need occasions and protection of infantry to be effective (a roof, or a small street make targets closer, so, just shoot in the mob, or at least a decent protection from cavs).
For me, guys like Bagge/XyNox/Robinhood/Nikkodin/Stevee/ArcherHelot are really dangerous because they play this game for much longer than most archers, so, they know things that others don't, and they are trained to aim really fast and calculate the angle of the shot to make long-range shots.
Just add that you can use better armors with lighter bows , because the crosshair depends of accuracy AND damages of the bow (you can hold more time a nomad bow than a long bow , this is why I try to use horn bow with heavier armors). And I tried the "bow" , and it's already decent if you can't afford longbow's repairs.
And thank for the tip against shielders steevee, this is really a nice guide.