Although I agree the Big Ten is a different beast then the PAC-12 and obviously the AAC and you need your team DNA to be more toward the Big Ten type, but while Frost was at Oregon, those Oregon teams beat Michigan State and came within a score of beating MSU at MSU during Michigan State's heyday and at the time truly a prototype of Big Ten built DNA. They also played Ohio State tough in the 2009 Rose Bowl and really the only game Oregon's team got overmatched was the National title game vs Ohio State. They also beat Wisconsin in the Rose Bowl and again, Wisconsin was a typical Big Ten built team at the time.
Simply put, whatever direction Frost is going, he just doesn't have the players for it yet.