Can't tell a difference. However your middle pic shows a differences because of the lighting in the room. Notice the one on the left has light from the doorway maybe? hitting it but the one on the right doesn't.
Either way, I believe this phone has the best screen besides the LG G Pro(I haven't any other phone to compare it to). Whenever I help my coworker with something on his G Pro, I start missing that screen when I had that phone.