If you had any doubts about the Xbox One's graphical capabilities, with them being 720p on iterations like BF4 and COD: Ghosts, please put them to rest.
The games look AMAZING on both systems. There's a huge difference from current to last gen. I was playing BF4 on the 360 before they shipped my One. When it finally came I played it on the One and it took awhile to pick up my jaw from the floor. I don't think the beauty is so much in the resolution but in the 60fps. It's smooth like buttah!
I've had no hardware or software issues so far and I've set up everything from the cable box to the Kinect and all function great, but I'm still losing my mind on how good the graphics are. I can't wait for later titles but for now, please put your concerns to bed. The Xbox is a great system.