80 draenai MM hunter on mug'thol

[Lorake]

Yea if anything you shouldn't have any points in AS if you are ArP build. Since you get more damage increase from the ArP from SS and not AS, SS single shots get closer to AS. What you might not be factoring is the extra damage that comes from SS crits, which, when you're Marks, you should be around 50+% buffed, at least.