The 3 end pillars of WoW are the huge portion of the player base.
I mean, you do see them out there making tournaments and getting views over pet battles do you? Or who can clear the campaign story line the fastest, or who can defeat an elite on their own.
Edit: Poll: What is your favorite game mode in WoW?
Even with a small small fraction of the player base from the forums, you can see that the 3 end pillars are more popular than WQs