Moving my car into the garage, I overheard a delighted Miami Cuban-American celebrating the retirement of Fidel Castro from his positions as Commander in Chief, Head of the Council of State (i..e, President) and Head of the Council of Ministers (i.e., Prime Minister).
Explaining his joy, he opined, "When you have a dictator who has ruled for 49 years, who has done more damage than Hitler, than Mussolini, than Stalin...."
This is like those who compare Bush to Hitler. Goodness and badness (or evilness) are graded values. Even if Castro was or is bad, there may have been a worse person or two.