Everything said about Garrett can also be applied to Landry. During that 20 season streak of consecutive winning sesons they only won 2 league championships. They really should have won six or seven.
There were some real heartbreakers, the two Packer losses, the two Steeler losses, the 49er Catch game, the last minutes field goal during the Colts Super Bowl 5 game, etc.
Go back and looknat the league championship games. Every loss was by a TD or less, ever win was by double no digits
Cowboy teams have been great but they have never been lucky.