Ono..

The fighters in the list you mentioned about less talented fights all had decent chins. Khan I'm afraid does not.
He was floored by Watson (4 TKO/ Ko's in 13 wins) in the amateurs, watch the silly dance he does. Its Judahesque. He was floored by Rachid Drilzane who has 1 stoppage in 15 wins. He had no stoppage victories when he met Khan, he was floored heavily by Willie Limond (Who moved up from 130lbs ) who has 8 KO/ TKO victories in 29 wins and then Gomez (Another 130lber) who floored him and hurt him to the body.

Unless Khan is talented enough not to take another flush punch again then he will get KO'd once he reached the top level.

Unless Prescott has a less than average chin himself I do not believe Khan would beat him in an immediate rematch.

Finally if it was Ramadan does that mean Khan was not eating like a boxer should. He sounded ill in his interviews, like he had a cold or virus.

Despite all the above I hope he does become a world champ and does not go the same way as Fraudly