Which will sell more Killzone Shadowfall or Titanfall (on XBOX ONE)?

[Mmmfishtacos]

DM235 said:
Titanfall, because almost every XBox One owner will buy it, while Shadowfall will have to compete against CoD and BF4.

And titafall wont compete againts COD and BF4? 

I'll go out a limb and say that it does.