I half did, I didn't really play wow anymore because of the lack of content, so I just bought sc 2 then because I liked the beta and I don't think I'm going back to wow till cata <.<
Well theres at least 5/6 of us went to SC2. There has been like no raids since RS came out. Wow for me is just about grinding gold for Cata but I cant even be bothered doing that. I agree with "Less teamwork difficulty' and more 'personal difficulty"