Didn't Vic Richards claim 8,000 calories a day of all white rice and chicken breasts?
Did you miss the "99%" part? Victor Richards isn't 99% of people. It still doesn't negate the point that the old timers ate higher fat diets, making it easier and more plausible to ingest high number of calories.
And, that 8000 calories is what he reportedly ate at the time of that interview....WHEN HE WAS ALREADY MASSIVE!!!