...and how exactly are you viewing these photos? You cannot judge the quality of the screens from photos due to both the camera used to snap the photo and the screen being used to view the photos. The advantage of OLED cannot be made visible on an LCD monitor, for instance.
How so? It works for comparison, or at least gives an estimate, since it was taken with a single shot/camera, the camera is capable of capturing the different colors, and your screen is capable of rendering the different colors the camera captured - it doesn't somehow reset to a neutral level, your screen will show the difference in colors and quality.
The only thing is that the effect might be exaggerated or lessened due to the camera or screen.
The first picture is slightly zoomed in and slightly transformed for perspective to adjust the angle (Due to the original picture.), I think, but that wouldn't increase it's quality or anything -- if anything, it would decrease the quality.