I would agree with you to a point only but in fact you do need to know more than just weight. Some device may use more steel in their chassis, heavier heat sinks and transformers, others use lighter chassis material, heat sinks and add temperature controlled fans. Also, more costly transformers could have higher VA to weight ratio. Denon, and properly Marantz too, claimed to use custom make transformers, so if they wanted to , they could have make their transformers that produce higher VA per lb.
Most receivers of each manufacturer use the same materials in their receiver chassis, I don't see them using a differetn guage sheet matal or different chassis material just to make it weigh more. We know Marantz/Denon use AB amps, and you can bet their receivers use the same chassis with a different faceplate- I've been reseqarching receivers for a long time, and I'm pretty certain about this.
How so? What you listed above clearly show THD increases NOT decreased at higher output levels.
.05<.08, 125>110.
Denon/Marantz did not say 110 watts with all 9 channels driven simultaneously and I have no doubt the each of the 9 channel of the Marantz SR7012 can output more than 110 watts at less than 0.1% THD.
Well, if you're going to put it that way, why is Audioholics and most of us, readers here, have a problem with manufacturers specifying 1 channel only spec?
I use S&V reviews and measurements as reference- they have the best receiver review practice, which is to include measurements of receivers' power amp sections into 2, 5 and, almost always, 7 channels, here's their measurements of the Marantz 7012 which has the same power specs as the 7011:
Two channels driven continuously into 8-ohm loads:
0.1% distortion at 138.7 watts
1% distortion at 169.1 watts
Five channels driven continuously into 8-ohm loads:
0.1% distortion at 104.9 watts
1% distortion at 117.0 watts
Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 75.1 watts
1% distortion at 90.4 watts