They mentioned that they have a lower metabolic rate than someone of the same size. I doubt they have less muscle than the average person at their weight
From his picture from the biggest loser, he looks a lot different at 191lbs and 5'11" than I do at 195lbs and 5'11".
With as much cardio as they did, with as little as they ate, I can easily see them having a different body composition than someone else of their height/weight.
With as much cardio as they did, with as little as they ate, I can easily see them having a different body composition than someone else of their height/weight.