http://news.softpedia.com/news/Watch-Dogs-Has-a-More-Dynamic-City-on-Xbox-One-365299.shtml
.While the game shines on next-gen consoles, apparently it will shine more brightly on the Xbox One, as producer Dominic Guay told NowGamer that the game's version of Chicago will be much more dynamic on Microsoft's next-gen device.
"We’re also able to spend more time giving brains to the other people on the streets so that they can basically be smarter, and there can be more of them," Guay said about the game's improvements on PS4 and Xbox One.
"It’s what I call dynamism; basically, the way the city reacts to you, we are able to push further on the Xbox One."
No exact explanation was given about how the Xbox One allows Ubisoft to create a more dynamic city, but it might have something to do with the console's cloud processing feature