Currently, WoW design focuses way too much on the more hardcore players versus making a game for the masses, all while not borrowing or learning from other games anymore. As someone said earlier, what WoW did to gain insane popularity levels over a decade ago was that it was the first MMO designed for the masses, where the MMO's before it catered more towards more hardcore players. One of the main reasons WoW is declining doesn't have anything to do with FF, but that the game and development has completely lost its way. Who really cares which is the 'king'? Having both games exist and do well is what everyone should be hoping for, as they can compete and hopefully learn lessons from each other (much like FF learned some things from WoW back in the day).