While you can take in consideration that Stefan is the worst cause he's done worse things for everyone especially the people closest to him and/or with Caroline you could say she was better at it or not, I mean she only fell off the rails because Stefan and everyone else wanted her humanity back believing she was going down some dark path and so No Humanity Stefan convinced her to abandon her structured no humanity journey and let loose, in conclusion what are your thoughts and I look forward to see who was the best or worst.