What goes around comes around, you nuke someone they nuke you back and then its disaster all over, equations have changed. So I guess even with the unprovoked attack, killing millions of civilians was justified I guess so why just blame the Nazis then. Whats the difference here. Also don't forget that during the end of war, Churchill deliberately bombed Dresden with incendeary bombs causing loss of massive number of civilian life. Irony was that it was just un-necessary as Germany was on brink of defeat. Everyone has committed atrocities one point at a time, some are still committing it today with impunity, such is the way of the world, no one can claim to be a saint.
Anyways, Hitler or not, G Wagen will remain to be a fantastic concept of vehicle enduring all and prevailing over time as it has shown till today.