I don't think that it was sugar coated much at all. You had a businessman who was a member of the Nazi party who built a factory with Jewish slave labor, and later became disgusted at the treatment of the Jews and decided to save as many as he could. The Nazis are not portrayed as anything other but inhumane monsters who enjoy conducting summary executions whenever possible. The scenes where the Nazis were clearing out the Warsaw ghetto and later on digging up the bodies & burning them certainly didn't sugar coat the events of the Holocaust.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.
