I love to shit on Khan but its not as piss poor as we pretend. Ask Maidana.
It really is.
Maidana is a poor example really, plenty of referees would have stopped that fight, Khan was completely out on his feet and badly hurt. Yeah he survived, but not without going through hell first. If Pac ever gets him that hurt, he isn't surviving.
Even if you give him credit for that, you still must consider it one of the worst chins in the division.
Pac's power has been hitting much sturdier chins than Khan over the last few years. Not stopping Margarito, Rios etc doesn't mean much when talking about Amir.