In a sense, Tom Brady’s tenure with the Tampa Bay Buccaneers has already been a success. Because he’s shown he’s not a system quarterback and the system sure looks like it's missing something.
It’s hard to separate Brady from Bill Belichick and the New England Patriots even after their separation, but at the moment, they are certainly headed in separate directions. Brady has the Buccaneers looking like a legitimate threat, while Cam Newton had to be sent to the bench.
What really stands out the most to me is that if Brady had failed with the Bucs it could have been simply time catching up to Tom, but he’s not only continuing to excel with a different team, he’s doing it at age 43.