Batman is a Pioneer disc, same in US and Japan. It uses the old video master, which was brightened a bit for CRTs of the era from the dark theatrical prints.
PAL comparison gives an idea of the depth restored on SEDVD/BD but at the cost of color.
http://www.caps-a-holic.com/vergleich.php?vergleichID=468
The audio is the original Dolby Stereo (70mm was the same mix in 4 channel discrete w/2 baby booms), and easily the best release for audio. I listen to this track regularly, as it destroys all the 5.1 remixes.
...I really need a good way to start making audio captures...have way too many great sounding LD tracks...