Actually they lost 800,000 subs. ((SOURCE)) :
http://www.gamespot.com/articles/wor.../1100-6421529/ . But then again they lose and gain every now and then.
I would like to point out that add-ons made things
easier, and so players were unable to work with a more manual system. I think I'm the one you're quoting on add-ons by the way, I could be wrong and presumptuous. Hope I'm not. It would be terribly embarrassing.
I would also say that your view of the add-on usage is also a wrong view then, because people were really coddled by the use of add-ons and really can't do raids and stuff without them...