"Offensive Ranged Stance: While stationary, you gain Archer's Focus: Up to once every 2 seconds, you gain +2% competence bonus to missile damage. This effect can stack up to 15 times (for a total of +30% damage). Moving or using the Manyshot ability clears the stack. "
Since an archer rarely stands perfectly still, and manyshot (I assume 10k doesn't cause this) both clears the stack and is therefor mutually exclusive to it, the 30% # is greatly overstated. I would guess 15% is a stretch given that you have to regularly rebuild the stack and a large % of your shots come from manyshot. And again... you may get extra attacks via IPS on trash, but I guarantee melee will get that many or more extra attacks via cleave chain (and at +2/3/5 weapon damage).
Bottom line I think melee will do a bit more damage, but archery is close enough to at least be viable. Archery will have better burst with many shot + epic moment and has the advantages of switching targets instantly, hitting from range, and not being in melee. Neither is really superior IMO so... good job Turbine! Well... put an asterisk beside that, I still think it's **** that the best archers are monks.