In regards to libel, the wording in regard to what is opinion vs what is fact is important.
Ted Wells: "Based on the evidence, it also is our view"
Troy Vincent: "the report established that there is substantial and credible evidence"
Even though both these statements make reference to the shoddy "evidence" in the report, Wells' statement refrains from making definitive conclusions of Tom Brady's actions and behaviour. Saying "our view" is like saying "I think" or "it is my opinion" or "my theory". All examples of statement of opinion, which Brady's legal team would have a hard time proving to be defamatory since it would have to be a statement of fact... which leads us to Vincent's statement.
Saying "established" pretty much means "No doubt about it", "No question", "100% fact". Hardly the "preponderance of evidence" standard set forth by the NFL. This is the kind of statement that can be exploited by Brady's Legal team as a form of libel. And it isn't the only statement in his letter that provides libelous language.
"Moreover, the report documents your failure to cooperate fully and candidly with the investigation, including by refusing to produce any relevant electronic evidence (emails, texts, etc.) despite being offered extraordinary safeguards by the investigators to protect unrelated personal information, and by providing testimony that the report concludes was not plausible and contradicted by other evidence."
"Your actions as set forth in the report clearly constitute conduct detrimental to the integrity of and public confidence in the game of professional football."
In that first statement above, Vincent claims that Brady didn't cooperate much at all, that he refused to turn over his phone and uses Well's statement that they were going to handle the info in his phone with proper care. He then adds in that Brady provided testimony which was deemed insufficient and contradictory. Of course this testimony is nowhere to be found in the report. So how can he really know what Brady told the Wells team? If Don Yee's notes provide insight that proves contradictory to Vincent's claims, it's libel.
Regarding the second statement, what actions is Vincent referring to? The "evidence" of tampering is pathetically weak and, even on Pg 228 of the Wells Report, concludes that "the data did not provide a basis for us to determine with absolute certainty whether there was or was not tampering as the analysis of such data is ultimately dependent upon assumptions and information that is not certain." This is the case that the NFL is presenting. Pitiful.
Vincent's claims that Brady was uncooperative will soon be tested either at the appeal hearing or in Federal Court. Should this statement prove untrue, it's libel.