I went back 70 years. Iowa has had four 1st team AA, one 2nd team AA
(Chuck Darling-52, Jarrod Uthoff-16, Luka Garza-20, Luka Garza-21, Keegan Murrey-22)
Iowa State has had one 1st team AA, three 2nd team AA
(Gary Thompson-57, Marcus Fizer-00, Jamaal Tinsley-01, Georges Niang-16)
If you want to cherry pick, the 60 years between 1956 and 2016, Iowa State had four AA and Iowa had one.
If I counted correctly, just in last 40 years (82-22) All-Americans (1st & 2nd team): Duke-31, UNC-24, KU-23, KU-15, Oklahoma-9, Illinois-9