Of course, none of those things address the picture quality, which was the question being asked and answered
Additionally, it was about regular DVDs, so none of the HD audio standards would apply. And would require adding a Surround system into the conversation as well, which isn't part of this. I guess some people still play with aspect ratio, but i haven't changed mine since i got the TV, staying at 16:9 seems to work fine, and just putting the vertical bars up on the 4:3 programming. Looks shitty stretched anyway.
A side issue is a programming one, about how much is blocked with respect to HD audio between devices. Seems that the studios are concerned about making hi-def copies of the discs, and limit what kinds of audio are carried over which formats/conversions.
I look forward to the stuff mentioned in HDMI 1.4, however...
But thats just it.. Not everyone is smart enough to put said bars up.. Thats why HDMI is better. I'd sooner use component over DVI.