Players are drafted based on measurables and potential more than their college production. This is why teams like Michigan, Texas, Miami, and Florida State who all underachieve on the field still produce NFL draft picks. They recruit size/speed and whether their college coaches are great or incompetent, the players still get drafted based on their athletic ability and body types.
Over the last 20 years, CU has had players who were productive in college but didn't get drafted, or if they were drafted it was in the later rounds because they didn't have the measurables. Even Landman, as great as he was before the injury, probably would have been a late round pick because he lacks the speed/quickness of the higher rated LB's and this is a guy who could have won the Butkus Award last year. Other than DB's like Chido, Tedric, Ahkello, and Isaiah Oliver, it's been tough getting Buffs drafted in the early rounds. Gotta recruit better (CU is currently 11th in the Pac-12 in average stars per player for the 22 class). Maybe Tad can start recruiting for the football program.