Was Khan ever the top guy at 140??

[Primo Carnera]

Never ever! at 135 he never even won a World title! he got knocked cold by Prescott and went up in weight. Prescott was nowhere near the top of that pile, you had Casamayor, Nate Campbell and a whole load of Diaz's ahead of him.
so he goes up in weight , beats NOBODY before getting a shot at the weakest champion out there (Kotelnik) . Frank Warren had produced a miracle to get Khan from being KO'd inside a minute by Prescott to World Champ at the next weight up. Warren's reward was to get fucked off out of it by Khan. (Karma some might say.)
so he becomes a champion at 140, but you still had Manny Pac, Hatton and Bradley that were up there then , all rated higher than him .
The guy is a MYTH!