While there "maybe" that many subs, on my server last few times I have bothered to log in, the total server populations has been less than forty. So NO this game does not have a viable playerbase,
I know when my six-month sub (yep, I am an idiot) runs out I will not be counted, and I am sure many other people who subed for six-months have no intention of resubbing to swtor. Then I guess the fanboys will have to count the f2p players to pad the number of subscriptions.