The XB1 is only an HDMI passthrough it will give you the audio and video quality. But it's not a Qdeo or upconverter, I think only an A.V.R. has that capability at the moment.
I have both the XB1 and the 360 they are both IR compatible and the XB1 can only be your {ONE} unit if you have HD cable already,
As only HDMI connection and they all need to be connected to your IR codes for the XB1 to control all.
The blueray is the same as any. All basic audio formats and settings