From the linked page:
Does “most institutions” mean most overall, or most of those which these forums focus on (private residential colleges on the upper range of admission selectivity using holistic admissions reading)? It is hard to believe that this method is applicable to a majority of colleges overall including open admission community colleges, regional (or sometimes flagship) state schools that admit most or all of their students by a GPA/rank/test-scores formula, less selective private colleges which get most applicants and matriculants from their local region (so regional division would not make sense), etc…