What leads you to that conclusion?
I remember hearing the same thing about KF from isu fans. Once he has to recruit his own players they will tank. Then it was KF struck gold in 2002 and that will never repeat. Only to see 2 more years of Top Ten finishes. Then in 2015 it was just the schedule and Iowa was going to tank. Then it was Iowa will never win more than 7 games a year and they have won 9 and 10 the last 2.
Seems to me isu fans think they know a lot about what Is needed for football success is but it is never football success that has been achieved at isu.