This Thing You Call Aggro.

[Kevin]

You lump all the pets together as things that make you pay more attention, but most warlocks have one pet out during a battle, so you lose much of that "I'm doing this all the time".

You then say that warlocks pay attention because of applying DoT's but other classes who can DoT really shouldn't. If it has less than 8 debuffs on it and isn't CC'd other DoT classes need to do the same thing your warlock does. Do I want my DoT on there now (this includes priests with SW:P) or at all and which one? Sure they don't have as many choices but they do the same checks.

I'm not going to deny that the warlock lends itself to battle awareness in a lot of ways. I think I will concede that they have more roles and skills that ask them to do this than any other class as well. But it is still more about the player behind the keyboard than the class. I've played with clueless warlocks, just like clueless warriors and priests and hunters and and and...

Small nit: Druids also have 2 forms of CC that you ignored. Sure roots is only usable outside and that means most instances rule it out, but it is probably the most difficult form of CC to use well because things can attack out of it. And while hibernate is only good for beasts which are sheepable, that doesn't mean the druid won't be doing that as well. They can, and will, both be used depending on the group, even if the druid is primary healer.