Khan is #1 because he has the best chin in that list right? oh wait no it's probably just the typical "hurr hurr glass chins" thread. Not that's there is anything wrong with that...but it must be substantive.
To be fair to Jones his wasn't bad from the start it's more due to accumulation and fighting beyond his sale by date, he gets cracked more often because he hasn't got the athleticism he used to have and he's getting hit by bigger men because he can't make the lower weights