Just for fun, I looked at Iowa v ISU end of season Sagarin ratings in the Ferentz era (1999-2019). Not sure there are lot of surprises. Overall, the numbers seem to support a conclusion that Iowa has consistently been the better program, but not by an overly wide margin.
For scale, the top team in the country is usually between 100 and 105. Iowa's never finished anywhere near that level, but they've come closer than Iowa State (take that, Clones).
Iowa State's high water mark during this era has been 2017. By my count, Iowa has had 10 seasons that have eclipsed Iowa State's best during this era (with an 11th being a near miss - 2005).
Iowa has been consistently better with 1999, 2000, and 2013 being the only seasons where the Clones finished ahead of the Hawks (2011 being a near dead heat).
Closest matchup on paper was 2011 with the two teams being a neutral field pick 'em. Widest gulf came in 2003 with Iowa, per the rating system, being about a 4 TD neutral field favorite at season's end.
Iowa's best team (2002) would have been about a TD favorite over Iowa State's best team (2017) during this time span.
Over this period, Iowa has been, on average about a TD "better" (neutral field) than Iowa State.
In 2007, the best team in the state of Iowa was UNI, with the Panthers finishing ahead of both Iowa and Iowa State in the final Sagarin rankings.
