It looks like ADV does more than controlling the volume between programs. If I am watching a DVD, it is the same program all the way and it also acts similar to DRC in quieting down the louder scenes. That is why you can select (at least on the Denon) the options of Day, Night and Evening to control how much the volume will be regulated. It is very similar to DRC Low, Medium and High. So they seem to have a similar purpose but with a different result.
I agree that ADV works pretty well to even out the volume in TV programming though...

Bruno
M80s/VP180/QS8s/EP600/AVR-890
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"The problem is choice..."