Some journalist said that Osama Bin Laden was the worst criminal since Hitler. What do you think?

Stalin survived Hitler and killed many more people. We don't know how many because the Soviets didn't keep records like the Germans did. Chairman Mao killed many of his citizens but we hardly ever hear about him. In more recent times, Idi Amin Dada oversaw the killing of at least 300,000 Ugandans, many by his own hand. And of course Pol Pot ordered the murder of at least 3,000,000 Cambodians. And let's not forget the countless Vietnamese civilians who were killed at the order of Richard Nixon. It seems to me that Osama Bin Laden is small potatoes compared to these orher guys. But maybe some people value American lives over other people. I am really interested in your opinions.