Khan should win this fight and he should stop Judah.

That being said, I think Judah is a very live dog in this fight for one main reason - he has the ability to hit Khan with punches Khan won't see coming (something that a slower fighter with poor timing like Maidana was unable to do). Judah is fast enough, and Khan's chin is shaky enough, that I think if Judah lands the type of sneaky upper-cuts and straight lefts he used to that he will be able to hurt and stop Khan.

9 times out of 10 Khan wins this fight, but I do think Judah possesses the tools to pull off the upset.