He did nothing at Stanford to prove he can build a Top 10 CFB program.
His final year at Stanford, they finished in the top 10. (#4) He was awarded the Woody Hayes Trophy for Coach of the Year honors. They went from 1-11 the year before he was hired to a top 10 team. Stanford also finished in the top 10 in 2011, 2012 and 2013. He built a top 10 team, and Stanford became a top 10 program for four consecutive seasons with the roster he helped assemble. Perhaps you should choose a bar he didn't clear to prove your point that he "did nothing at Stanford..."