Thee point is outside of fO$U (who has the advantage of getting the top qb prospects in the nation) and Purdue, Iowa ranks right at the top of the B10 in terms of QB development.
Under KOK Iowa has seen an regarded juco qb turn into a Heisman candidate, made Nathan Chandler look like a decent B10 QB (I still don't know how the **** that happened), turned a lightly regarded 5-10 qb from Texas into an all B10 qb despite not having a running game, turned a lightly regarded prospect from Ohio into am NFL draft pick, and IMO will see the same thing from JVB.
When the worst qb season you have to deal with in a decade includes a 17-6 TD to INT ratio you know you've had it good.