I'm really not sure of where exactly you think you are going with this, but, if you insist....
In the last five years, Iowa has 38 wins to its credit, isu has only 20. In the last decade, those totals become 79 wins for Iowa compared to just 41 for isu. Iowa has won bowl games including a BCS designated Orange Bowl; isu won the Insight Bowl by one point over six-win Minnesota in 2009 then proceeded to lose to Rutgers in the Pinstripe Bowl and to Tulsa in the Liberty Bowl (each by considerably more than a single point.) Iowa has finished ranked - isu has not.
Therefore, Iowa has clearly been the better team over the last five years, the last decade and , for whatever it is worth, forever seeing as Iowa holds a decisive edge in overall records since the inception of each of the football programs. That is your logic here.
Thanks for clearing things up.