Yeah, that's fair. "Redeem" is just one of those words you have to lock down a very specific and explained meaning if you're going to use it in an argument. Under the meaning that I use, I think it's defensible to consider Leopold the worse person, he did things that earn him the infamy of the world just because he wanted money and land over which he could rule as a true despot. Under your meaning, which admits that any positive qualities of either could be counted just to merely register against their evil, I don't know enough about Leopold as a person to measure against the slightly more that I know about Hitler as a person. I'm sure Leopold would have to have had something, maybe he liked playing with his grandchildren, or he washed his hands after going to the toilet, or maybe he was just charming and interesting in conversation (apparently Hitler, for all his regarded charisma on the speaker's podium, was usually kinda awkward and even dull if you had to talk to him, people who met him who weren't committed Nazis seemed to often find him disappointing next to his reputation).