Some of this crap is true. Much isn't.
The records of both, McCarthy and Sherman, were made better by crampy NFC Norths. Many years it was a guaranteed 6 wins or at least 5. 5 wins = 31%. 60% is 9.6 wins. That's less than 50% against the rest of the league. (Yes, the Patriots have waltzed through this all the Bellicheck years. Except, Bellicheck and the Patriots win Superbowls.)
I bet Rodgers was adjusting routes, based on what he observed about the way opponents were covering.
It's going to be tough, Bears and Vikings are very good. The Lions are good. We have some tough games against non-NFC North. It will be a hell of a dog fight all season. Every game will be hugely important, especially opening day. The Bears Still Suck, let's go prove it