No Jack is a SMW, I'd be amazed if Peterson even fought him, let alone stopped him. I think he's fighting DeGale next anyways. I was on about Khan.
Sadly, Khan is still popular enough to walk into a bigger fight than this. I think a rematch would be similar - Khan has a ridiculous speed advantage but he'll never be able to deal with Peterson inside. Lamont doesn't have much power either, so it would always be an entertaining fight. Not sure how good Peterson would be off the juice though.
Khan was in trouble with Molina and Diaz he is completely **** to bits. Every single fighter listed in this thread beats him you only have to hit him once.