Khan is world class when on the attack but his defence is terrible. Khan might look like he's in the fight for 4 or 5 rounds because he'll likely be beating Floyd on activity early on but then Floyd will catch him and stop him. Khan always starts fast and fades later. The Maidana & Peterson fights in particular are evidence of this. Floyd generally lets fighters like this have a couple of rounds before he starts picking them off. No way does Khan win this fight.