It’s all build and frame; there are people out there with small frames who are tiny (Which it seems everyone on this board is and dates); there are also medium and larger frames that have a larger build.
Personally, I’m 6’4, 210#s; my GF is just about where this girl is size and weight wise. But she is far from fat, infact she’s got a gymnast/professional cheerleaders body with almost all of it muscle. Personally I like a girl with a few curves and not just skin and bones. Plus myself not being a small dude like a lot of you guys are… tiny just doesn’t appeal to me as much; I’m afraid of breaking them. LOL