We can argue until the cows come home, because Fascism, after its demise 60 years ago (and please let's not include Pinochet among Fascists) was propagandized till no end, and still is propagandized, as the ultimate evil. The lie repeated 100 times becomes the truth. No, it's gone, it was gone in 1945, while Siberian gulags lasted for another 15 years, murdering in that time as many if not more as the Nazis had done (and certainly Mao did his share of murders during the same time.) All this does not register in your or mine conscioussness as the endlessly repeated crimes of Hitler. It simply doesn't exist. So it's a matter of perceptions, individual and societal, and those have been shaped by the propagandists, many of them sympathizers, fellow travelers or paid lackeys of the Communists.
There is no argument which is more evil, there is a question why we stubbornly continue to disregard the crimes of Communism.
I would like to learn more about Pinochet. Some regard him as a victim of a leftist international community. Nazism may not be as dead as you think. Hitler and his crews’ ideas live on in the Middle East mind unfortunately.
Today I do agree that socialism is the greatest danger, especially since it has embraced anti-Semitism as a part of its creed, and has allied with the Islamists. (The chief reason I was horrified by the movie Sum of All Fears was that the enemy was a Neo-Nazi. The premise was ridiculous if not devious)