I owned the Denon you have in your signature. I compared it with a Yamaha V6A. Night and day. Denon went back to the store. I can prove what I am about to write now. More than 30 hours of Audissey calibrations including the x32 without a decent result. Three calibrations on the Yamaha, two of them because I changed the position of the speakers and sounded right every time.
Last, maybe I do not understand what you try to say but if this is true there is no need to buy expensive avrs since all sound the same. I owned a NAD T778 with Dirac. It blows your Denon out of the water. Though it sounds better than the V6A, It is not very far.
Last, reading your signature, you are using external amps while I am talking about internal amps.
I personally will never touch a Denon or Marantz ever. Over 30 hours of tedious Audissey calibration for nothing. Maybe in tests Denon sounds best but in my room, in real life conditions, Yamaha sounds way better, and YPAO does a very good job.