We also won and had 200+ years to kiss and make up
Apples to oranges comparison.
1.)Japan took place during a regular war and encompassed a regular surrender from a state. The War in Iraq was a literal invasion and occupation of a country that was not militarized and served no threat to us.
2.)Japan also retained their native government and government officials were not purged. Iraq we occupied their state, overthrew their government, and essentially gutted every government official in the "de-Baathification" of the country/government.
3.)In Japan we did not put into power a sectarian authoritarian official. In Iraq we put into power a sectarian authoritarian who many saw/see not better and possibly worse than Saddam
4.)In Japan as a result of the Allies occupation a civil war did not break out and a civil war continued once we left Japan. In Iraq a civil war did break out during our occupation and it also continued once we left
5.)In Japan the Allied occupation effectively rebuilt the infrastructure and the Japanese government was able to deliver basic social services to the population as a whole. In Iraq massive fraud broke out during reconstruction of the country and reconstruction essentially did not occur.
6.)In Japan a massive terrorist organization did not form out the allied occupation. In Iraq a massive terrorist organization did form out of the occupation.
7.)
https://books.google.com/books?id=SC4X1muvigYC&pg=PA338#v=onepage&q&f=false