So age is something to do with quality????Denon is superior as they have histiry making AVR & completed 100yrs.
The Pioneer has been rated very highly. And it does have the Anchor Bay chip for video-upscaling. This was not known earlier, but revealed lated in an article.
The Pioneer comes bundled with an iPod Connector cable, so there's no need of a separate iPod Dock.
No doubt, that Denon is a known brand. But, with these two receivers, I feel the Pioneer wins over the Denon.