Can a white rapper only be compared to other white rappers?

I was thinking about circumstances where being white is the exception and immediately thought about the rap industry. It is undeniable that the rap industry is predominantly black or simply not white, so it is not surprising when in an interview, Asher Roth is asked to compare himself to Eminem and Vanilla Ice. Rather than asking Asher what other rap artists he compares himself to, the interviewer assumes he can only be compared to other well known white rappers. I think Asher's response is pretty awesome and it definitely makes you think about why it is so difficult to gain respect as a white rapper.

http://www.youtube.com/watch?v=cwseTgszzDk