Like is said, different foods. It should come as no surprise that different foods would have different fat and caloric content. Less fat doesn't necessarily mean better for you, either. Less fat but higher carbs is far more unhealthy than low carbs, high fat, because of the way the body deals with excesses of each. And not all calorie are created equal, despite many people thinking that a calorie is a calorie. There are people who actually believe that margarine is more healthy than butter.
