@Sachb I'm not disputing what you like or prefer.
One thing you got right again; THD beyond a certain point will stop affecting sound and whether it's 0.008% or 0.009% is really irrelevant.
However, it can talk volumes about the competence of the designers. It can also say something nice about offering such a correctly sounding avr at an affordable price. That's nice.
Shouting at numbers expecting them to change seems useless. If the measurement you're referring to was done by some of our trusted members, I'd be inclined to take them for their word.
However, I DON'T think that said Marantz will fall behind in performance. I clearly stated that there are very few things Denon might do better. I'd say they come very close and wouldn't expect difference in sound. (I own a Yamaha). People here hold Yamaha in very high regards, make no mistake about that.
When it comes to your question about sound, two things I feel I need to tell you;
You keep talking about amps or avrs (regardless) and attributes of sound. It's a wrong approach. When well done, the amp or avr shouldn't impart on the sound. It should give you back what you put in only amplified.
Most of the brands you talk about are quite capable of achieving this. Meaning, with enough knowledge (about level matching and tuning the sound in the pre/pro or DSP stage of the unit) you can make these brands sound exactly the same.
The other thing is; it is really not utter nonsense. The sound is successfully described and measured by the measuring equipment at our disposal. Sure, it is true that looking at a graph WILL NOT enable you to correctly imagine how it would sound.
Lastly, these: “Whether it's warm, laidback, harsh, punchy, tight, thin." - Are our emotional responses to sounds and are very inaccurate and susceptible to interpretation.” Having said that, you’d be amazed how much can a professional read out from graphs and predict how a speaker will sound (given that room doesn’t affect it).
I hope I helped:
Yamaha, Denon, Marantz can perform equally well.
None of them has sound signatures, so they don't sound like this or that.
Measurements do predict, for the most part, the performance of gear.
Distortion on your headphones out is a sign something's not right. It's not bc of Denon.
No one should judge equipment solely by measurements and no one here does.
Everything else being equal, it would be almost impossible noticing the difference between 95 and 100 watts.