Bruce Arians first head coaching job came in 2012 when he unexpectedly became the head coach of the Indianapolis Colts. He went 9-3 and took them to the playoffs, all while having a rookie quarterback. He then won coach of the year. He then became the head coach of the Arizona Cardinals and lead them to the playoffs in 2 of the last 3 seasons with them, the most recent season taking them to the NFC championship. The one season where he did not get to the playoffs he went 10-6 in an intense NFC West. Arians has won the NFL Coach of the year 2 times in the last 4 years. And he has only been coaching for 4 years. He also won it with two different teams. Andy Reid has won it once in 2002 and hasn't ever won it since.
Andy Reid has shown he can coach in Philadelphia and survive the media, an accomplishment in itself. In his first year, he was booed for drafting Donovan Mcnabb, one of the greates quarterbacks in Eagles history. He brought success to Philadelphia, taking them to four NFC Championships and one Super Bowl. Also, he is extremely good at examining talent and choosing his coaching staff. Notable names from his coaching staff were John Harbaugh, Steve Spagnuolo, Ron Rivera, and Jim Johnson.