I dont think Tintanfall will be a "system seller"(a game that move/sell a lot of consoles) because it's not exclusive for xbox one.
-PC gamer will not buy a xbox one for this game because they have the better/cheaper version.
-Some 360 gamers maybe upgrade for Xone,but most of them will spent 60$ only for the 360 version;
-Some PS3 gamers maybe upgrade for Xone,but the PS3 install base are not so "dudebro" as 360,so spent 500$ for a always online multiplayer only shooter is not so attractive for them.
-Some PS4 gamers maybe buy a Xone,but most of them already upgraded for next gen,so spent 500$ for other next gen right now it's not possible.
IMO,The game will sell a lot for the people that already bought the Xone(3 million + people that will buy until Titanfall's release).
Maybe i'm wrong but i'm cool with that ;)







