Every player picked in the top 10 needs to be ridiculously good to justify the pick. No, different positions have different impacts on the game. A non pass rushing LB doesn't have that great of an impact, outside the elitiest. You can be a quality player at a number of positions and impact the game quite a bit, while at others you need the be insanely good to have a real impact. The most extreme are FBs, but centers, TE, and LB can also fit here. They expect him to be insanely good if they picked him at #8. I'm also guessing that Fangio understands the value of inside linebackers in his defense.