I respectfully disagree that big Mac has been a FRAUD (other than that little white lie about devoting himself to watching every Cowboys' play that, I believe, Stephen Jones lol'd about).
Instead, I think he presented himself to Cowboys' ownership as a former SB winning coach who was willing to do whatever might be necessary to shield his superiors from criticism and to carry out their wishes without ever questioning them.
If Jerry Jones was looking for a loyal lap dog, yes-man of a coach who was unlikely to ruffle any feathers while always being able to point to his (2010) SB victory as a way of (trying to) silencing his detractors, he could not have found a better man than Michael John McCarthy.
From surrounding himself with his long-time, and often unsuccessful, coaching cronies (like Philbin, Nolan, and Whitt), to his befuddlement over game management, to his lack of playoff success, nothing that Big Mac has done thus far in Dallas should come as a surprise to those who have observed his coaching career.
Big Mac is exactly who he has always been.