I think it's apples and oranges. I think Belichick has the advantage in the short term. I've seen too many games where a guy was out or something similar, and he used duct tape and bailing wire to make it happen. Heck, they went, what, 3-1 with the third string guy two years ago? I think Cam getting stuck on the 1 yard line is evidence of more than just one play; I think it's evidence of the real patchwork nature of the offense at this point; McDaniel couldn't go for something too much more complex at that point.
The one thing about Cam that has surprised me is how much they've used him going downfield; even with that, though, they're not really asking him to throw the really intricate timing patterns that result in risky throws (and the one time they did, he got in trouble throwing behind the receiver).
I have no doubt that Tom wants to win every game, but for him to do his magic, he does have to be comfortable in the offense and he's not there yet. He's not going to pull games out of his ass single-handedly anymore (not that he ever really did) and certainly not until it's "his" offense. The only trick is, can he wait for that to come about?