Certainly a selling point for a high ranking DB recruit coming to college is how well does the college train the recruit for the NFL. Does Iowa, for example, train any recruits to become cornerbacks in the NFL? No.
The Paschals, the Considines, and to my knowledge, Spieveys, etc., didn't make it into the NFL with any relevance playing DB (Detroit seems to be easing Spievey out). Playing on the practice squad isn't relevant to playing as DB in the NFL. Playing only on special teams isn't relevant to playing DB in the NFL. Does Fletcher still play for St.Louis? He may, beside Sanders, be the only Iowa DBs - safeties who are/were relevent for any length of time in the NFL from Iowa under KF.
For example, Dean, keeps explaining his point, but it's a different point than I originally had and still have about being sucessful recruiting highly-rated high school DBs to Iowa . Probably he thinks my point is unnecsessary...