Yeah Belichick wins 0 Super Bowls had he not completely lucked into having Brady as his QB. Firstly when anyone, not just Belichick, drafts a QB that late in the draft, they're not expecting much. Then it took Mo Lewis for Brady to even get a shot. We all know what Bledsoe was, a very limited, mistake prone QB who was not going to win multiple Super Bowls. Belichick also has not drafted another franchise worthy QB, including Jimmy G who obviously is way too fragile to survive as an NFL starter.
The team was 0-2 without Brady and coming off a 5-11 season. Once Brady became their starter, they went 14-3 and won their first Super Bowl. The team became more Brady-dependent over the years as the roster mostly declined. Let's not forget either, Brady's the most clutch QB of all-time and he led game-winning drives in each of the team's Super Bowl victories.