http://www.eurogamer.net/articles/digitalfoundry-call-of-duty-ghosts-next-gen-face-off
"Owners of Microsoft's new console aren't treated to the same level of quality in this area. 720p - also featuring the same post-process anti-aliasing - is confirmed, which is then upscaled to 1080p by the console before arriving on your TV screen. On top of that, a strong sharpening filter is also applied over the entire 720p image, encompassing both in-game imagery along with the HUD elements and even the main menu screens. Based on the fact that we're seeing something very similar in Killer Instinct and Dead Rising 3, we have a feeling that this may actually be part of the Microsoft upscaling solution - and we don't like it.
The end result isn't a particularly pretty sight: harsh edges are further accentuated over the additional jaggies created by the upscaling, while fine details, foliage, and the surface of water all appear quite grainy in comparison to the PS4 and PC versions. It's a crushing step down from the PS4's much clearer 1080p presentation, taking away some of the finesse expected from a next-generation product, but thankfully it's also something that you can opt out of.
While there's nothing you can do to increase the native resolution of the Xbox One game, it is possible to disable the sharpening filter by switching the console's output resolution to 720p. With that in mind it's rather baffling as to why Microsoft would choose to bork image quality in such a way by default, especially considering that we actually see more detail resolved when the unmolested 720p output is upscaled by our display - though your screen may (or may not) add a frame or two of processing lag to carry out its own upscaling calculation. Perhaps the team behind the Xbox One hardware thought that the sharpened look might help to hide the deficit in resolution, but in truth it does more harm than good."
I'm glad I'm not the only one noticing this when I play and take screenshots of DR3 and KI.