The sole reason I incorporated it in my analysis is this from a developer's chat:
Do the weights used in the default position roles accurately reflect the relative importance in gameplay for the attributes for each position? Since there are some major changes to current wisdom (i.e. str and tkl for db's now more important than gi and tec) will the FAQ section on primary and secondary attributes be updated? (mcbethbr - Hall of Famer - 2:20 PM)
The weights represent an overall representation of the position in terms of the Gridiron Dynasty and not necessarily just in game play. There are some categories that are included as a way to represent some importance placed on recruiting work ethic and stamina as well as the major roles in the category. For DB's in particular, the Str and Tkl matter slightly more than the Technique in general because of after catch tackles and defending the run. Since this number represents every possible play it is used in a more generic sense. Also, Game Instinct is currently higher then Str and Tkl for the default DB.