I stared to put this in a thread as an answer, but it occurs to me this may need its own space.
Romo has attained a level of understanding about this game that only the elite players have. Not to say the run of the mill QB's don't see it, perhaps. But an understanding of what works and what doesn't is where Romo is now.
What makes Peyton, Brady, Rogers, and Brees special. Certainly it's the talent they possess. But it also is a complete understanding of their teams strengths and weaknesses and what the defense is doing.
But there is one other aspect to the top flight QB.
And that is the collective intelligence of the team surrounding him.
Romo is audibling like crazy. He sees where the ball needs to go. But too many times the people who surround Tony are not on the same page. They do not have the understanding.
This comes down to it takes a team. But this is less the talent the team has than the brains the team has that surrounds Romo.
Factor in the offensive line weaknesses, and Romo now seems to appear as if he is struggling, and what is different between this year and the ones when he wqas in complete control?
He has a finite window for success on every play, but getting his pieces into place is not always a done deal.
I think the combination of the line play along with the intelligence factor, and that Romo is now not playing sand lot football but directing a team that doesn't see what he sees is the biggest reason he is not as successful this year.
Put the team around him that will protect him and get to the spot he deems necessary and this guy will take the team all the way.
And if this is the case, then how sad is it that a guy who is mentally and physically in the top level of the game has to suffer not only from a lack of talent, but the fact that his team doesn't have a big brain like Brad.
He is truly unique.