What makes a Great American Novelist?

Are either of these guys the Great American Novelist? 



Perhaps the more interesting question is, why is the "Great American Novelist" always presumed to be a guy? If you haven't already, take a moment to read the contentious discussion of exactly this question at Slate (Can a Woman Be a Great American Novelist?) and The New Republic (The Franzen Fallout: The New York Times' Shameful Treatment of Women Writers). Which women writers would make your list?