I’d split my bet between Dagwood and Jughead. The fact that both of them can constantly pack it in yet remain slim indicates a metabolic difference between them and the other two. Jughead’s also a teenage boy, and nobody can out-eat a teenage boy (witness Jeremy Duncan and Peter Fox, who supposedly have typical appetites for their demographic). So Jughead to win, Dagwood to place, Sarge to show. (Since they’re eating hot dogs rather than hamburgers, Wimpy is in the position of a wet-track racehorse trying to win on a dry track.)
I wonder – if you win an eating contest but afterwards it’s discovered you have a tapeworm, would they put an asterisk next to your name in the record books? Would that be considered illegal performance-enhancement?