The vid that explains it all

[armin]

Then warn him, where were the warnings? It's a title fight FFS, the REF was poor in not letting Khan know that what he was doing was unacceptable. He should've been warned at least twice before any point deductions. Ali pushed all the time, so did big George, so did Joe. It doesn't make it right, but at least give the fighter the knowledge that you're onto him and as the referee the next time you do it there will be a point deduction.
I'd like to see a ref deduct a point every time Floyd uses his elbow?

This ...one thing that irks me refeering really is so subjective in boxing. One ref will let a fighter get castrated due to low blows, another will constant hugin happen, while another freaks at slightest sign of in fighting, its all very inconsistent.

[Gandalf]

Some people have selective hearing. Khan was being warned all night long. 'Stop pushing', simple but filled with meaning. You have to listen to the referee and adapt. Khan ignored him and carried on. He also ignored his own corner all night long too. Khan has a potato between the ears.