Mmmm, I noticed the same thing when I made a solo rogue. It did occur to me that sniping is technically the easier method to abuse but daggers give bigger DPS with back stab and scoundrel crit mult+ and one handed for damage+ and accuracy+ .... the movement+ from scoundrel and speedcreeper also helps alot.
Though I wonder if the bonus from elevation would make up the difference. If we were able to level up more, I'd say 5 sneaking, 5 scoundrel, 5 ranged, 5 huntsman would be the better stance.....that way you could have all the crit mult+ and high crit chance and safety of bow.
