Tanking Blood Furnace

I finally made it to the Outlands and went from 58 to 60 in no time. So the other night I'm asked to tank Blood Furnace and after warning the person of my minimal experience tanking agreed. It was a disaster. I can't even remeber how many times I died. I know some if not most of the time it was my fault. Anyway after thinking about it I started wondering if the problem is my stats. Could someone let me know if my numbers are to low to tank either Blood Furnace or Ramparts? Here are my self buffed numbers:
Armor: 6k
AP: 714
Crit: 20.21
Health: 4.9k
Defense: 294
Dodge: 14.21
Thanks for any advice. I know my gear isn't great but I thought I would be able do the earlier instances in order to get better gear as reward. Here is my armory.