"In my opinion:
Its GAME design choice based on the limitation of the X1 CPU,
They are likely trying to push positivity on why its 6v6 (and they should, they have alot invested in it) But the likely hood is they KNEW it would be 6v6 and designed the games and maps around it."
Yeah, because the Xbox One totally doesn't have virtually an identical CPU to the ps4 right? And of course they are going to develop the game around the Xbox One, it's the primary platform and what Microsoft paid for. I bet a lot of devs facepalm when reading gaming side these days.