Brady is great though that cannot be denied. I just think his team success is just that, he isn't the catalyst necessary but a huge part of the team success. I think had he played with the Chargers for example, he may have had a similar career to Phillip Rivers who didn't have the stroke of luck that Brady had with the surroundings of coaching and supporting team.
I think Brady's superbowls are weighted way too much in evaluating greatest of all time.
let him play with Fisher and he may be Nick Foles.
Doubt if it get that bad, but he would drop like a rock for sure.