Brady has surely been helped by the system and benefitted greatly, still that wouldn't make me question how "great" he is at all. I think the biggest advantage was to find himself in that system to start with, but he took it from there and developed into what he is now. I'm confident he'd b every good in another competent offense. 

 

That final drive against Seattle in the superbowl with 8 straight completions till the TD was a thing of beauty and he's done that over and over again. Even last playoff against Denver when he was brutally beaten up with no Oline he threw more than 300 yards and came a 2 points conversion away from overtime. A great player in a great system if you ask me.

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