HD2DVD means that someone has capped an HD broadcast in true HD and converted it to dvd-video format. Depending on the cap, you can have awesome results. Most true HD caps can run from 4-16gig big, and alot of times alot more in it's raw format (I think AotC was close to 30 gig in it's original uncompressed format).

This HD cap was done on off of the HDMonsters channel I believe. That or Universal HD. I haven't watched it in a while so i'll have to check. I have a copy of the commercially released dvd, but I haven't opened it yet, so I don't have a comparison between DJ's version and the one out.