You never, ever apologize for wins in the NFL. Ever.
The Packers found themselves in an absolute battle in the desert, and found a way to win. Truth be told, if someone had told you that before the game had started, would you have been surprised? The Cardinals have now been the victim of 5 straight losses decided on the final drive, giving their all to some really good teams along the way. The 49ers, Colts, and Seahawks all found themselves in a similar predicament that the Packers did, all probable playoff teams who had to eek out a win against this Cardinals squad.