I'm sorry but destiny is on 4 different consoles, as is far cry, gta5, battlefield. I don't see how they could push a ton of ps4's. Maybe destiny because of the bundle. X1 will have evolve, COD. Also halo, sunset overdrive, forza, project spark, dance central for exclusives.
Halo MCC will sell 5+ million copies(including digital)
halo 5 will sell 10 million copies(including digital)
x1 will pass ps4 in USA, and UK.