Japan basically went almost unpunished (culturally) after the war. Germany was definitely punished—to the point that many Germans today feel as though they are somehow responsible for what their ancestors did.
Germany (both of them) certainly rearmed quicker than Japan did.
One reason Japan has not had the pressure put upon it by Western liberals that Germany has is that it is a "non-Western" culture and thus, according to multiculturalism, is beyond critique by "Western" standards. Notice that even though World War II was "the good war," our war against Japan is now considered "bad."
I have long maintained that the contemporary Left has much more in common with WWII-era Japan than with the USSR. I don't think the ideology of WWII-era Japan has been studied to the extent that European fascism has, and I believe it would pay us to learn more about it.