Pretty certain it's alot more than twice the size and popularity of TOR.
Also, I noticed WoW creeps up alot in these forums, people use the WoW name when defending anything wrong with Bioware's shining jewel (or in the real world, Bioware's gleaming silver turd)
"WoW doesn't have it!"
"WoW never had this at launch!"
"WoW had less of this!"
Seriously, just go away rofl.