More on Warlocks in the Expansion

[Warlock]

And due to itemization and lack of avoidance (no Shield Block and no Parry), they were generally inferior to Warriors, correct?

Itemisation more so than the latter. Raw armour and HP counts for a lot - a 60 druid tank in appropriate blues compares pretty well to an equivalent warrior.

Yes, Druids can and have tanked most bosses. Some have even been their guild's main tank as the guild learns each new encounter. I'm pretty sure a lower percentage of tank-specialist druids had that role than DPS warrior builds since a lot of people thought of using a Druid tank as a stunt just a couple of steps up from having a voidwalker do it. Player perceptions can take a long time to change; the fight where I held my target against raid DPS, the warrior lost his against healing and I got blamed because of "all the extra healing aggro of a druid tank" comes to mind. I'm getting plenty of tank invites in BC, though - hopefully it will diminish rather than completely die as capped warriors spec back to protection. WTB Tier gear with tanking stats. Or at least general Feral. Int, Spi and +heal aren't much help if switching out will get you one-shot.