The same user who got his Xbox One early has posted a picture of what Ghosts looks like on Xbox One. You put this side by side to the 360 version, and can see some differences. The biggest thing you’ll notice is the lighting and detail on the cargos around the area.
And, the user has also said that the campaign plays well on Xbox One, with little to no frame rate issues.
SOURCE: @moonlightswami via @LiamFTWinter