For the last 5+ years every new game has been labeled a "WOW killer". Each time I honestly believed it and always to my surprise they sucked.
My favorite 2 WOW killers were the following
DC Online I never played it until it went F2P and spent hours downloading it and trying to login when it became F2P. I played for 5 minutes realized this game sucks and uninstalled it.
SWTOR I played for 2 months chewing on my arm the entire time. I played with 3 friends and we had nothing better to do. The game was AWFUL the story was horrific. Yet I paid for 1 month due to just wanting to hang out with friends. It took our friends dad getting cancer and he quit playing. I think we all used that same excuse well since he quit we might as well quit too. It took me 2 months to grind out level 30. The only thing that SWTOR accomplished was George Lucas got even more rich of the licensing of the video game. I am just waiting for the Special and Extended Editions of SWTOR so we can all be duped again like we do when he releases, re-releases and re-releases the same movie.
Thats my story.