Expertise (55) and Hit (382) WAYYYY too high, you only want 26 expertise and 164+ hit. Use ArP food and work on reaching the ArP hardcap of 100% with any upgrades you can (82.17% now).
Biggest issue with 90% of under-performing Fury Warriors is that you need an addon for Bloodsurge instant slam proc notifications. I recommend MikScrollingBattleText for a sound notification and Satrina Buff Frames with a bar just for your slam proc so you both hear it and see exactly how long you have to use it.
Beyond making sure to get good slam usage just make sure to follow the good rotation, maintain sunders and rage dump with HS or Cleave whenever 50+ rage (keeping in mind that it is an on next swing ability and not on the GCD timer).