These screenshots are mildly misleading. The "screens" with the Nanosuit in them look fantastic but are provably not in-game. Take a look at the suit, and pay close attention. Every single ridge on that is not normal-mapped, but modelled. There isn't a single engine available that can handle polycounts like that for a character and there is an unholy level of Anti-Aliasing. All of this points to them being promotional shots, rather than ingame.