Ranger archery vs melee at end game?

[skarlorn]

I know that Auld Lang Syne relies heavily on their rangers for sustained bow damage on isle 5 raid bosses.

Bow DPS is as good as you can get it. It's the same as melee, you understand? Look at your ratios and your haste and that will give you an answer whether you'll do better DPS at range vs melee.