First of all Katsidis isn't a puncher. If you've followed his career you'd know that he's a high volume brawler that breaks guys down over the course of a fight. He's not heavy handed. And neither is Mitchell. The idea that Mitchell was some sort of KO artist is nothing but ridiculous Brit hype. Secondly, Katsidis would be a great challenge for Khan. But the fight will never get made, because Kadsidis would knock him out for sure. He's great a putting his gloves on fighters repeatedly no matter what attributes the other fighter possesses - speed, height, whatever. There's no great pop there but it's more than enough to get rid of Khan.