[Yeah, the other had tried that, but he still felt there was good inside Cain, somewhere. Even Pete had tried to do good things, if for the wrong reasons. Master Xehanort though and Malifacent... that was different. But he didn't like to think of people that way. It wasn't in him, yet Cain seemed determine to make him think that way.]
It's a good enough reason to just be polite in passing. I still like to think you're better than you make yourself out to be.