On the BP Guys thing all Parcells has consistently said on this issue is that Talent Evaluators are more interested in Track and Field Talent then football talent. His quote, to paraphrase, was "without a stop watch they would not know a 1st rounder from a 4th rounders."
While being a great athelete is fantastic it is not the key to being a great football players. Being a great football players requires more brains, more team discipline, more studying and more heart than being a great track and field guy.
Give me 45 BP guys with median athletic skills and I could coach a SB team.