The NFL ranked the draft prospects by production and they ranked Sanders as #1 in the class.
Colorado is an interesting case study as they have high level players at some positions. At others they have the worst in the league players. OL was one of the latter. For Sanders to produce like he did behind that offensive line is just crazy.
Ultimately I don't really care if Sanders succeeds or fails. But the kid is definitely worthy of a top pick. There are some red flags, but there are red flags with all of the QBs including Dart.