Erm am I writing in a different language? I have the UB900, and tested a friends Xbox one s. The image of the UB900 is more define as the xbox hsa a softer image kinda like oblivion film (Blu ray vs UHD), the machine is quicker, it supports far more audio formats as shown by another poster on here which is key for surround sound/AV receivers. Then there is the High-Precision Chroma Processor on the UB900 which upscales all half chroma resolution (4:2:0) to (4:4:4), this gave more realistic colours to the image.
I have not said it's rubbish, its a good entry level player but it is not as good as a standalone.