Arstechnica presents the top selling/downloaded games on Steam in 2014.

[Jizz_Beard_thePirate]

Hmm, there is something odd about this cause if you look at this chart from the same site, a lot of the games are missing on the first chart that the OP posted. This is on page 2 btw

And then according to this, Skyrim sold 6 million so its even more weird! This is an older date btw

http://arstechnica.com/gaming/2014/04/introducing-steam-gauge-ars-reveals-steams-most-popular-games/

So I think the way we are reading the charts is wrong