::::If Google hits and traffic statistics (seasonal or otherwise) were sufficient reasons for determining a WP:PRIMARYTOPIC, then every disambiguation page would have a primary topic, which would have been selected on that basis. Analogous comparisons to others in the same profession are, indeed, relevant. There are a number of basketball coaches with more-impressive records than Gary Williams whose names nevertheless carry parenthetical qualifiers rather than dominate their disambiguation pages by looming in unique separation at the top of such pages. As with all widely-popular sports, basketball does, of course, have its WP:PRIMARYTOPIC superstars and household names, but those are players, or former players, such as Michael Jordan, not coaches, or retired coaches such as Gary Williams whose last game was in 2011 and whose current title is given as "Special Assistant to the Athletic Director". Consensus will ultimately have to determine if such is sufficient for WP:PRIMARYTOPIC status, Google hits notwithstanding.