a question about SC2's state at this time

It doesn't. WotLK wouldn't be the only source of delay.

He's a magazine writer.

I don't have the link. I have the actual magazine. I don't know if the article is available online.

No, I said it referenced Burning Crusade. If Burning Crusade can delay StarCraft II, I wouldn't be surprised if WotLK can do so as well.

Here's more: Rob Pardo saying Blizzard has only recently matured enough that the dev teams don't overlap anymore. Link: http://trailer.onlinewelten.com/videos,id4103,blizzard_interview_with_rob_pardo.html