It's not crystal clear from TFA whether the numbers are just from the final release, or also incorporate the leak that happened over a month before of the whole single and multiplayer.

I've no idea how you account for the effect of that on sales on your final product, as I saw youtube videos of it and got me to buy a game I otherwise wouldn't have, which I personally find interesting as I was more sold by the real footage that I was by any marketing.

Then the problem isn't just pulling information, it's matching some signature of the disc to that information and building that database of disc signatures.