Isn't this a normal thing with screens that aren't LCD? Don't quote me on this, but isn't it due to the using less power to produce blacks? That's what I've always figured anyways.
Look at the dark areas like between the guys legs and her hair. You'll see it smear up and down as the person scrolls.
It's like this on the 6P's display as well that I've noticed when scrolling through my G+ feed.