T2-EE is the only real 1080p DVD movie as you mentioned.

The resolution is only 720x480p. The reason why the WM9 player is not showing full screen on those DVDs my projector is showing the movie in its native 720x480p resolution. My HTPC's resolution is set to 1280x720p.

http://www.avsforum.com/avs-vb/showthread.php?s=&postid=3082438#post3082438