That's gross, and I didn't know that. That's certainly not something I saw at the Holocaust memorial or in Dachau. It's widely reported, however, that German schooling teaches the Holocaust thouroughly while Japan ignores the Asian Holocaust entirely. I can't speak for the German tank museum in particular, but every museum I've been to in Germany made it clear that the 1928-1945 period of German History was unequivocally evil.

The article I linked in the OP mentions how this has caused persistent political divisions between Japan and it's formerly occupied neighbors.

I thought more about this and realized the Us presents the Enola Gay without context and that's gross too.. Though the US does have museums on the genocide of Native Americans, Japanese internment camps during world war 2, a national slavery museum and memorial, and there's been a lot of public controversy around racist statues, so that also feels categorically different than enshrining war criminals as saints in your imperial shrine.