Sorry if I sounded aggressive, I'm not trying to, it just comes out that way when it's typed. I'm just having fun, but also making a point. My point is that artists who are not primarily pop artists, often have several, if not dozens of songs, that are big hits on the forums they're played on. Strictly speaking, most of what you're saying is factually accurate, but I don't like hearing that Tracy Chapman's a OHW, any more than a rock music fan would like hearing that The Who is a OHW.
As you know, the Billboard 100, a pop music chart, is more or less reflective of a band's success, depending on how closely their songs fit into the pop category. When they don't fit in, the stats are not representative.