Lots of talk about the formula. I put it in the initial post, but I'll repeat it here.
(primary stat% + weapon skill% - 9) * (elemental skill or warfare% + 1) * (crit multiplier[if you crit]% + high ground% + 1)
maxed out this looks something like "180% * 160% * 170%" for huntsman or "180% * 160% * 200%" for scoundrel, if you crit.
A third option would be to build for crit gear and put your points into huntsman for highground, which would probably be best
It would look like "180% * 160% * 220%" if you crit, or "180% * 160% *170%" if you don't crit.
These are the same no matter what class you play. The only exception, is that if you go 2 hander, you can put your points into 2 hander instead of scoundrel.
