I played both games, and I don't need flaming on which is better. You can post your opinion, but don't force it on others.
I personal could care less for mmorpgs, they are extremly boring, long, and take forever to do anything in it remotely interesting. However World of warcraft is the best mmo to this date. It keeps you busy with fast leveling (compared to other mmo's), pvp and pve servers, and so on. The reason why is because blizzard made it, and blizzard seems to make awesome games.
I have this conversation all the time, it's not new in the gaming world.