Kinect integration, the ability for real multitasking, Azure just off the top of my head. The potential is much greater on that side. PS4 really has nothing on Xbone except a small power advantage, just like last gen. lol @ people only started saying this to downplay power, people knew the Xbox One would be changing things up more since the day it was announced, whether it was a good thing or a bad thing.
Sony does have a potential feather in its cap with Gaikai, but tbh I don't expect much of anything to come out of that.