Could boxers being chinny have a psychological meaning to it?

Say a fighter gets knocked out brutally in one round, and he enters a fight after that thinking... "he might knock me out fast".. and the media and general public accusing you of being chinny, do you think you might get knocked out quicker? When I boxed, I went into the fight knowing that I could take a punch and I have yet to be dropped... Granted this is at amateur level but still. This topic is mainly aimed at Amir Khan btw.