I still stand by the statement. Most of your examples seem to be Gormok's Impale which has a lot more going on (dots, tank transitions) than just hitting a single tank really hard. Those encounters drop really high level gear. If you're tanking him with item level 226 (because you've only been in the instance 5 weeks and maybe your tanks haven't gotten a lot of drops) then you've got some deficit to make up. The good news is that because of the way loot works in that instance, you can choose to gear your tanks really quickly if you so desire.

Yes, you will still need to work to keep your tanks up. That's just part of hard mode. But my suspicion is still that the community won't jump to tank class choice as the explanation for why a certain fight is easier or harder for them. Or, more realistically, they still will, but... alas.

- Ghostcrawler, Lead Systems Designer