IGN has put together this awesome video of graphics comparison between all platforms – PC, PS3, PS4, Xbox 360 and Xbox One. They’ve used Thief as the common denominator, but it’s so well done.
Just to summarize, there’s a massive difference between the previous gen (PS3, Xbox 360) and current gen (PC, PS4, Xbox One). Having said all that, there’s very little difference between the current gen consoles. It’s hard to essentially make out. For us Xbox One looks the most vivid and the PS4 and PC look more identical, but not inferior or superior to the Xbox One.