I can still remember a fighter who fought Morales thrice. During their first encounter, that fighter had the same cut from a headbutt. He fought the whole twelve rounds with all his heart, blood gushing on his face and, alas, lost by UD. He was given the chance to redeem himself and TKoed Morales in the 10th round in their second fight.

Morales was given the credit for winning against him despite the fact that his opponent was also blinded by blood.

I don't see any reason why I would not give Khan the same credit.