It's hard to quantify success in the MMO industry. I would say just being able to keep your game afloat and not go bankrupt is the most that most MMO developers can hope for. Even World of Warcraft with it's 80 Bazillion subs is still almost as harmful as helpful to Activision who has been looking to sell Blizzard for years now.
I think SW:TOR is successful to some degree, but that is surely despite the gross incompetence of the development team (I'm talking about the leads, not the guys in the trenches doing the coding...the Hickman effect is not their fault).
World of Warcraft makes 30 million dollars a month. Your are just dumb