feral stats weight are realy close together it acutaly depents on the fight what will be the best.
for example our aoe (swipe) is totaly not buffed by mastery and therefor hit \ exp & haste will be the better stats
for single target fights mastery > haste, but once a bleed effect is applied to the target it cant miss so bleeds make hit & exp less desireable
for a general good selution go got hit & exp caps and then go for mastery & haste