There's a couple of possible outcomes here, ranging from 100% exoneration to a negotiated reduction in the penalties.
For those who want exoneration, keep this in mind:
1. It doesn't matter what the impact of deflation is to the game on the field. This is about breaking a rule concerning tampering with balls after approval by the officials
2. It doesn't matter what the Patriots provided to the NFL. This is about not providing 100% cooperation.
3. It doesn't matter what other teams have done. But it DOES matter how this punishment relates to previous penalty judgments.
The best outcome involves the complete release of Wells' primary source material, unedited and raw (including raw materials from Exponent). It should also involve relevant communications between the League and other teams and testimony concerning a possible sting and/or retribution.
1. A competent independent forensic engineering/physics/statistical and materials testing team can easily and systematically debunk the Exponent Report. Which will leave only the texts, which are problematic. I imagine a good lawyer, possibly augmented by context not provided in the Wells Report, may counter the "more probable than not" standard exposed by those texts. This is the questionable part and may rely on believable testimony by McNally and Jastremski, which sounds like a stretch. The Exponent team simulated someone needling the balls...did they re-measure the balls afterward? Was only a needle used, or was it another gauge that had a deflation button? Could they simulate comparable results or was it only that someone was able to unpackage, stick a needle in a dozen balls and repackage within the time frame?
2. The McNally interview refusal can be countered. The only counter for Brady's refusal would probably be a legal defense that he was under no obligation and that he feared leaks of personal/private correspondence. Maybe the counter is for the League to provide all of its relevant communications, including the people who complained and Kensil's role (among others). How does Brady get around the "didn't fully cooperate" angle -which is grounds for punishment?
3. It's clear that the punishment does not fit the crime, as it all comes down to videos and texts that are circumstantial and have no reliable scientific confirmation. What does Brady have on his electronics? Is there a smoking gun? His refusal is the only real basis for concluding that he "more probably than not" had a "general knowledge" of rule breaking - as opposed to simply preparing inflation levels to his liking before inspection.
Wells has some explaining to do about how McNally could inflate balls after inspection, because he can't pick and choose his texts. The same crap that has him labeling himself the deflator needs to be combined with his contention that he could over-inflate balls. That's not sticking a needle (gauged or not) into a football surreptitiously - that's pumping up a ball after inspection. If that's a line of bullshit, how does Wells give other statements credence?
It all comes down to the texts, McNally's lying, and the bathroom video. We know scientists can argue their's no substantial proof that balls were deflated, but lawyers will need to argue the other stuff. How will they do that?