Ping Yards and Touchdowns question. ?

Okay. The man who owns the NCAA ping yards record is Timmy Chang(University of Hawaii.) The single season touchdown p record and completion percentage holder is Colt Brennan(University of Hawaii.) Chang was picked low in the draft and cut. Now he plays in the Canadian leagues. Brennan got picked sixth round. See the weird trend? Yes, I know both never won any big awards or lead their team high in the standings. But with those numbers wouldn't they be first pick?.