But DLC is still tiny. DLC is only a fraction of the main game's price and not even all EA games have DLC. As a comparison you have lots of DLC from Take Two (Borderlands, LA Noire, Red Dead, GTA4, Bioshock 2) and Ubisoft  and yet their income from digital is tiny (around 10%). So what explains EA's high income from digital download? Facebook games?

They do also like to charge ridiculously high prices for digital versions of games (on PSN at least). Maybe some people have actually been foolish enough to buy Need for Speed for the equivalent of $75...

EA also has Origin, PopCap, and their Play4Free devision http://www.play4free.com/. Then they have their other browser/social games and their mobile games, things like the iOS Dead Space game etc. And they have a lot of DLC and microtransaction stuff in their sports games, they even have microtransactions in Mass Effect 3 where you could by guns for multiplayer. They also publish a lot of XBLA, PSN, Steam games like Shank 2, Warp, deathspank etc.

It all adds up, TOR isn't even their only MMO they have Warhammer and I belive Dark Age of Camalot is still running as well.

that is a big part of digital sales and then we shouldn't forget that some developers only sell their games digitally, like indie developers as example.