Originally Posted by
Nangz
Your haste is higher than mastery because you are using Unholy Blight. Plague Leech is significantly better and lowers the value of haste significantly. Keep in mind that stat priorities are based off best in slot gear, which you are very far from. Your sim is likely not wrong, its just you don't have other things optimized to get the maximum.
There are likely other little things, but its hard to tell without you posting a dropbox or something of the html file that simc outputs.