Another thing to remember when trying to output the most damage on your warrior is pull out your 2h'er before you rend, the damage from rend is based on the base dps of the weapon. I typically play sword and board and when I get a crusader proc from my shadowfang, I pull out the big gun glacial stone for max damage overpowers and hs for my rage dump.
I had a good fight with another warrior a couple nights ago, he did eveything right except follow me to the rest of my teammates. He had me hamstrung and rather then try to trinket out of it , I threw up shield block with my Redbeards and shield spike up, and let him rage dump on me. After the last hamstring he did, I disarmed him, hamstrung him, trinketed and ran back to a group of hunters. Lol.
I think what people need to remember is that being a warrior isnt about putting out a ton of dps, though it can be done with a 2'her. Its more of a CC and utility class. Your job is to keep people kited and make everyone around you better.