There's at least +-900,000, across the US and EU. That's a safer number to make up than what you have.
I don't mean to be that guy, but there's no way SWTOR has three million players because if the game sold about 2m copies on release and had ~1.7m subscribers, and went F2P about a year or something later. Then that means SWTOR lost a significant amount of subs, and gained a significant amount of F2P.
But maybe I'm just being cray. Maybe SWTOR has a bajillion subs and the masterminds at BioWare decided to make the game open to f2p just so others could try before they buy.
You make sense though, I just don't like how ya said 3 million players total, that seems far-fetched.