The textures are identical, but besides the obvious increase in visible detail the resolution allows, the 1080p screen does not match the others perfectly in camera distance and angle because in the 720 screens I just toggled MLAA on and off, but for 1080p I had to restart the game and reposition the camera by hand.
The 720 screens are just cropped, only the 1080p was reduced to match the size of the others. I rather not post the full screens because they are kind of lousy and would end up everywhere :P
Btw, taking screenshots is a pain... every time you see a couple of good press shots, know that someone had to waste a LOT of time getting everything right. There's always a ragdoll in a weird place or a texture too close to the camera...
and the Internet never forgives stuff like that