Don't want to seem like i am trolling, but Xbox games only run at 720p although the console can output at 1080p, and the graphics are nowhere near as good as on pc, even on low - medium pc settings.
All i could suggest to maybe fix it (if it is a technological error) is to try a different monitor and a different cable, if that doesnt work then it's the xbox's shitty graphics.
Bro you not trolling but when playing 1080p on pc then looking at xbox consoles look a hot mess. Alot of people assume to believe xbox outputs full 1080p which is not true even tho i think xbox looks a bit better playing on a 1080p monitor instead of a hdtv its not full native 1080p. I honestly sold my console after seeing skyrim on pc all the works..That pretty much sealed the deal for me