I am a Zab-fan from way back, but he is what we call a choker.
In saying that, I definitely think he can beat Khan.
That is gonna be a very interesting fight, the result will depend on what Zab shows up. Zab's problem is in the top two inches, and maybe an older/wiser Zab can pull this one out of the bag. You cant write him off, and on his day he is a world-beater, and time with someone he respects like Whittaker could be just what he needs.
Zab's a terrific fighter, lets see what hes got left.