I think almost everyone compares themselves to others - or tries to. I know that whenever I see someone that is about my height and really big, I have the urge (never followed up on) to ask them how much they weigh so that I can get an idea of what I look like to others. But I have found, through comments by others regarding me and someone else who's weight I happen to know, that I look quite a bit smaller than most people my weight do. At my heaviest, most people thought I was in the high 200's and they were universally shocked to discover that I was pushing 400 read hard.