The current list is largely based on that link, which is already included in parenthesis. That's probably the best test that I've seen for DVD media, but strictly speaking none of the items there are identical to either of the versions.
From what I have to go on, I don't think any of the current authoring software involves any re-encoding of the video. I haven't looked much at audio, so I don't know if Encore re-encodes audio. I do know that TotalMedia re-encodes audio to 2-channel.