The Nazis were more specific about who they killed, so they had a body count of only 6 million. Communists kill pretty much anyone they want to kill, and are more like 100 million.
So obviously, national socialism is better and more fun.
The Nazi body count is much higher than that. Jews alone lost 6 million but every European nationality involved in the war could claim victims.
Russians had 20 million dead although I have long suspected Stalin was responsible for many of those.