Originally Posted by
Theodoran
Sim results need to be taken in with a grain of salt. Usually they work in the following way. They calculate your dps with your current gear. Than they add a big amount of one stat and calculate again. The dmg difference is than averaged out over the whole amount. For BM-Hunters there is the 3864 haste breakpoint wich results in an extra dire beast attack. Up to this point droping mastery in favor of hast is highly beneficial, but ONLY if you can reach the 3864 mark. As long as you can't, go crit>mastery>haste.