What makes them different?

Now lets's play a game of what makes them different!

During WWII, a series of events and experimentations took place in china on behave of the Japanese. The specific unit was Unit 731. After the japanese invaded manchuria, they started to do human experimentation on it's captured prisoners. These experiments included live Vivisections without anesthesia, weapons tests on live prisoners, removal of limbs and other body parts, and many different types of chemical tests including injecting civilians with plague and other viruses. After there surrender, the US pardoned they're war crimes in exchange for they're information on chemical weapons.

During WWII, the Nazi's and there Third Reich were well into genocide and experimentations on the jewish prisoners. These included many like there Japanese allies like live weapon tests, removal of limbs and fetuses from live prisoners, and injecting of many different viruses and diseases including malaria. Most of the people involved like the other leaders and associates of the Nazi party were sent to trial for war crimes and any who escaped were searched for and will always be war criminals. If you were once a Nazi, then you are a war criminal.

Now why are they the same or different. The US still took most of the German's information and studies which have contributed to a lot of our information today on human experimentations. So why couldn't we just pardon them like we did for the Japanese? The Japanese did equally as bad things to humans, some may even be worse, and all or most of there information was safe and ready for the taking. Im guessing just because we were mostly only at war for revenge against Japan while the whole world was against the Nazi's. Still it pretty messed up that the Japanese got away with what they did. Well that's what makes them the same. Now I don't really know what makes them different but the US sure did.