Your gear looks fine to me. Armory does not show SBV and I'm too lazy to guess it from gear.
Assuming you have a really low amount of SBV (like 600), even doubling it would not stop your dieing to the Enrage.
Also, Warriors/Paldadins take more damage than other classes when incapacitated or stunned. We can not Block, Dodge, or Parry while stunned. Druids can not dodge either when stunned, but their superior armor allows them to soak more damage. Deathknights are the same way if any of their shields are up.
If your raid does not want to dispell the enrages, your healers need to be able to step it up a notch when she enrages. There's a reason Blizzard gave us a way to dispel it - it kills tanks =p
Failure is not an option. It comes bundled with the software.