Painter, Ryan, Izzo have been consistent contenders for B1G title---before those guys took over, those programs had periods of middle of the pack finishes before flourishing. Michigan had poor run until Belein took over. Matta took an OSU program to national title game and then flamed out.
OSU, Wisconsin, Illinois, indiana, MSU, Michigan have all had ncaa final 4s and B1G titles in last 20 years. Purdue has had B1G tie. Maryland has had lot of upper division finishes.
Fran has gotten Iowa to be a 0.500 team in B1G over his 11 years and has made Iowa usually better than the perennial losers like Minnesota, Penn State, Rutgers, Nebraska and sometimes better than a few of the better historical good teams like OSU, Wisconsin, Illinois, MSU, Michigan, Purdue, Maryland on their down years.
Fran has never made it to a Sunday game in BTT and he's never made it to sweet16 in NCAA. In conference play, he's had a couple logjam ties for 3rd place with multiple teams and last years clear 3rd place finish in B1G followed by BTT exit in semifinals, and blow out loss in NCAA round of 32, which was his best season at Iowa..
Alford and Davis have same to better B1G records. Fran has benefitted from doormats like Rutgers and Nebraska being added to B1G. Iowa clearly could do worse (lickliter). Could Fran do better than 0.500 B1G if he hired an defense expert as assistant and gave the guy the keys to the operation? Quite possible.