See this nonsense. People who don't know what they're talking about. Don't know boxing. Floyd's use of boxing IQ was levels above his opponents in the latter stages of his career. He would adapt mid fight and set up traps. That's boxing IQ. Pacquiao for example rarely had to use IQ. His speed, movement, power and combinations were usually enough. He used the same physical attributes and fighting style in every fight. In fights he was losing he didn't adapt. I see people talking on this thread about Zhangs physical abilities but that's not IQ. I would suggest the way he stopped Joyce and the setup was using IQ.
Zhang completely befuddled Joyce who couldn`t land on him, Joyce has landed far jabs on all his other opponents, he completely dominated Parker.