where did you have the gain/volume set on the back of the sub when you begain, that can play into the results. If set to low you might end up with -5 on the Denon. I usually start at the half way point. Also my EP600 because it has a Digital DSP processor gives me different results than my EP350s, especially for distance/delay.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85