Looking at Brady then, I'm reminded of BB saying recently that Brady wasn't Brady for the first few years. Arm strength? Accuracy? Deep ball? Mobility? Ability to throw on the run? Not really any of the above.
So it's not surprising so many people thought he was just a place-holder for Drew's return. What did he have? Well, he didn't turn the ball over.
BB said recently that what Brady brings to the team above all is that he doesn't put them into bad plays. We can't prove it, of course, but that good decision-making -- not being a risky gunslinger -- must have been there from the start.