Depends on what metrics you want to use. Daum had minimal D1 offers out of HS: his best was from South Dakota State. Not from Nebraska or Creighton. Also, as has been pointed out, his coach tried to process him out of the program after his redshirt season. He's worked his tail off to become as prolific a scorer as he is.
Heiman has offers from multiple D-1 programs that have had success in March; Nebraska beat out Creighton and Omaha for his signature.
So comparatively, at that point in their careers, the three D1 schools in the state all judged Heiman as a better prospect than Daum. Could it be reactionary? Sure. Miles and Mac see what Daum has done and decide they probably don't need to miss on another small school kid from in-state. However, by virtually all metrics we have access to, Heiman is thought of more highly than Daum was at that point in time.