I see a lot of McNabb, Steve McNair, Warren Moon and Russell Wilson comparisons for Dak. Having followed him extremely closely for 5+ years, I would most closely match his abilities with Tom Brady. The big upside with Dak though is his ability to run and be physical when needed. Not to mention all the intangibles he has ALWAYS brought to the table.
I remember very clearly his first SEC game at Auburn in 2013. The moment he stepped on the field you could see the entire team elevate their play tremendously. He has that effect on other players. Auburn had an extremely physical defense and Dak pretty much dominated them physically all night long.
His entire career, I have not seen him involved in one single game where I thought we had no chance to win. I also see the exact same thing with the Cowboys now.
For anyone surprised at him... It is because you didn't know who he was. Now it is becoming extremely clear.