So let me get this straight. You believe that these terrible screenshots are due to the fact that the game is being held back to 900p rather than 1080p? Yeah, I don't think so. If that is what you believe than you really need to educate yourself on resolution because that is really reaching.
I have a very hard time believing these images are of the final build at all. They look absolutely horrendous and it has nothing to do with resolution.