If hunter is dumb enough, evil enough to have sex with underage girls, it wouldn't be surprising if he mentions their age on tape.
"I can't believe your only 15...you look like your old enough to buy beer!" His attempt at flattering the young girl.
The guy did leave behind his laptop w/all this incriminating info on it with a repair shop.
Be interesting to find out if Hunter ever visited his uncles Virgin Islands property a few miles from Epsteins Pedo Island.