Di Ravello cared about Medici, its resources and its people. I mean, his speeches... they are really patriotic. Yeah, he killed a lot of people to become a General, but he believed it was a just cause. Medici under his rule wasn't poor and filled with chaos, unlike Panau.
And Pandak is a very different person. He literally murdered his father, terrorized everyone and tried to nuke US, Russia, China and Japan. And also: have you heard what does he say from radio-trucks?? He's a maniac and psycho.