Bruh! They're both bad as they are.
Sure Diodora has raped tons of nuns compared to Samejima targeting local women. But Samejima's way worse in general.
I mean, he f**king kidnapped a fiancee who was engaged and (albeit implied) raped her because he can! What a f**king piece of sh*t he is! But to kill her fiance right in front of her crosses the goddamn line!
He ruined something that was their happiness but destroyed it all!