Through simple deductive reasoning, I have determined that LDDB listing is wrong about the doc being 20 minutes longer on the Japanese LD.

The poster may have been under the mistaken assumption that the 74m version from the DVD was also on the Japanese LD; it couldn't have been, since on both the U.S. and Japanese versions the documentary fit on a single CLV side (meaning that both releases had the same 52m version that later appeared on the R2 DVD).

So now we don't have to waste our money on the 25th Ann. Japanese LD. (Though I still think it could be a good idea to get the original Japanese release, for a non-time-compressed mono track.)