does khan have the worst chin at elite level atm?

when we think of khan the first thing that comes to mind is his biscuit chin/eggshell jaw leading up to the prescott fight he had been dropped before by some fighters though he probably payed off boxrec to not show them statistics moving on khan fought prescott in 2008 in september, this was the 9th month of the islamic calender meaning khan was fasting for ramadan not to mention he had to make 135lbs his chin was probably drained so bad it was probably why he got his ass rocked by a jab. he then fought danny garcia in july 2012 which was also ramadan which is why his v2.1 neck could hold up. he was obviously drained (one of his many excuses) his fight with diaz was at a catchweight of 143lbs which suggests khan is having trouble getting to 140 now and will have to fight at 147 though he knows if he goes there his career is over as soon as he steps up even his v3.0 neck wouldn't be able to hold up against guys like guerrero, thurman, ortiz etc i bet they try and bang him in with berto and ruin his career heck maybe even "onepuncharound" randall bailey might catch him too. i believe his chin will obstruct him from doing anything at 147, though he should be proud that he is a two time world champion and a olympic medalist. begs i dont get banned for this lol