Jacoby was shutout by the Bills "in the Patriots' system."
When Brady came back, the team ripped through the league and won the Super Bowl.
Only Brady could win "in this system."
I'm the biggest Brady homer of all time (sharing the title with almost everyone in New England), but that is a terrible argument. Jacoby was playing with a broken hand and couldn't even throw the ball. In the three games before that he and Garoppolo lit it up before getting injured. If anything it's an argument against Brady. That being said, it's not because there are no (valid) arguments against Brady.