because Diaz is a washed up former lightweight who never had a great chin to begin with. Jones has the much better punch resistance. that's why. Brook would take Diaz apart with ease. he's much much better in every department.
yep. apart from Jones being a massive puncher at welter. he isn't. he's a good solid puncher at the weight, but not a big one. :good
what does someones punching power have to do with their ability to take a punch? Hearns could knock out fighters much bigger than he was, but get taken out by guys smaller than he is.
He is considered by some on here to be a tough ******* with an iron chin and power capable of knocking out super middles. Karass isn't really a puncher.