Why do you say Fury has a glass jaw? Tyson Fury and Carl Froch are the only Brits who have good chins. Getting floored by Cunningham is equivalent to Froch getting floored by Taylor. It can happen when you're facing a former champion and he hits you flush on the chin. What matters is whether you beat the count.
He took flush shots from Demarco and didnt have any problems, regardless what anyone thinks of DeMarco overall, he can definitely bang.
Broner's chin is clearly Grade A, fine antique china. If some bum like Errol Spence can KO him, he needs to rethink which weight class he is fighting in. Glass Jaws exist in boxing and on ESB. So we should definitely discuss it.
Demarco was at a huge size disadvantage, and thus, didn't have the tools to properly check Broner's glass mandible.
Did you notice that protecting his chin is the 100% priority during a fight, he doesnt even seem to care about the body I smell china !!
Obviously I don't know for sure, but I would imagine with his short, stout body, huge back and shoulders, that at the least he has a decent chin. Also I remember in an interview he said that Khan had "the chin of a 12 year old" I don't think he would diss someone else's chin that badly if he was hiding the fact that he had a paper mache Chin.