Maybe I’m missing something in this statement. But afaik, every single AVR decodes every single soundtrack the way it was encoded. What I mean is, Yamaha can’t be “center heavy” and D/M be surround centric etc. The only way this can happen is with DSP. Such as yamahas “sound modes” which are added after the decode. Doesn’t matter if it’s bistream and decided by the AVR, or pcm decided by the BD player. ALL sounds are steered the same, and to where there supposed to be. If you have older channels, then they’re not level matched, or using DSP. That’s simply a feature/fault of the manufacturer and should be looked at accordingly.
“Yamaha is a more dynamic AVR”? Could you please elaborate?