Sorry, but you are fat. You don't have 100lbs more bone than others. Very few are big boned, and the difference would be maybe 20-30lbs and the way you can tell they have big bones is when they are very low in fat or muscle but still look thick. You can lie to yourself and talk about being fat and healthy but science is not on your side. You are at risk for way more diseases and health issues than someone who has a healthy body weight. The fact that you are fat and cutting is all the more a sign that you are unhealthy. Stop justifying your behavior and own who you are, hate it and change or embrace it and be happy. Don't blame others, don't blame genetics, blame a weak will or else grow up and change yourself for the better.