As an objective aid. You must have missed that part. There will always be a degree of objectivity in determining best. FWIW, I think Mack Brown was overrated as a coach. Benefited greatly from some high quality assistants and basically getting to hold a draft of the best recruits in the state of Texas. His recruiting budget was one of the lowest in the country, cause he really didn’t have to recruit.
Tom Herman is a brilliant offensive mind that needs to put that’s onto the field as results. If I were hiring for Iowa I’d love to have him as a coach. Same with Matt Campbell. They all seem to be having great success. Ferentz has had success in his job. I’m not claiming Kirk is the best in the country, however he fits Iowa well. A consistent winning program with occasional great success. He doesn’t have repeated scandals and the players play hard. If CMC stays at ISU fo the next decade and a half and has the success of KF, I’ll wager you’ll be happy.