I don't know if Ms. Fitness America has very, very muscular women in it, or it's more of a muscular yet feminine look. But from reading "M & F Hers" and "Oxygen" you can see that those women treat training like a job. They really workout hard. Plus, their diets are *very* strict- especially before shows. They eat lots of protein and take different supplements (a lot of them are promoting the supplements too).
When I read about what they do, I think that maybe I could do their workouts if I had no job- and the motivation. But they don't eat any sweets or junk. They may treat themself to, say, frozen yogurt on occasion off-season, which makes me laugh because I think of fr. yogurt as being somewhat healthy since I could be eating full-fat ice cream! Now I know why they look like that and I don't! (Of course, most of us aren't in competitions, so that's ok!)