"Toronto Rocks" dvd question

I recently purchased a dvd of the "Toronto Rocks" concert held last year,
and have a question about video quality. The actual quality of the video
looks a good, but when I viewed the extras, and found a "direcors cut"
version of an AC/DC song, which also appears on the regular concert portion
of the DVD, I found the sharpness and quality to be 3 times as good! It
looked more like a true "video", unlike the rest of the concert which looked
like it was filmed with a different type of camera. Can anyone explain to me
the difference in these 2 types of video? I wish all my concert videos were
the better quality, it looks more true to life.

DW