Nice group test but I also think the Marantz 7010 should have been included - it has most of everything that the Denon has really for much cheaper price and it is the flagship of Marantz range (I know they are in D&M group).
Also just limiting result to one overall is impossible with so many criteria to consider. I would have preferred some sub category results before an overall result, but I guess it maybe is pointless or too obvious to do.
Eg. I would have had something like:
Best Value: Marantz 7010
Worst Value:
Anthem MRX 1120
Best Sound Quality: Arcam AVR850
Best EQ: Arcam AVR850
Best for one box Atmos:
Anthem MRX 1120
Most General Features: Denon AVR-X7200W
Best Build Quality: Denon AVR-X7200W/
Yamaha RX-A3050
Best Overall: ???? Depends which of above criteria is most important to you