He doesn't do it on his own. But...I have a theory and bear with me...this is a bigger issue than Dak VS Mahomes;
Is it possible players...especially a QB...can help give other players better opportunity to succeed? This, I think, would take some refined and objective assessment.
I will go back to Mahomes for the sake of making a clear case...just one of those miracles plays he seems to have handy....keeps the offense going, defense on the bench...and a win provided. Did he do it all by himself? Of course not...but he made a play the other QB's simple can't do (no knock on any of them!).
I also think something like the way a QB delivers a ball....not just "accuracy" or "catchable". Touch, arc, lead...those kinds of things that give the receiver...more and easier.
How about the way a QB can hide the ball on an option? I think Rodgers was good at that. He wouldn't get the play yards, but he fooled the defense enough to spring the HB.
See? I am sure this could be done...I certainly don't have the capacity, mentally or machinery...to investigate that but maybe A.I.? Or heck maybe someone already has the stats. It's a deep dive for sure....something many would have zero interest in. Show me the wins!