There’s no better and more stable indicator in terms of predictability of future performance than Pro Football Focus’ (PFF) passing grade for quarterbacks.
Raw statistics can often lie to you. Sometimes a quarterback’s best pass of a game falls incomplete, and often interceptable passes fall harmlessly to the ground. It’s wiser to put more weight behind process and potential outcomes versus end results.
With that context in mind, let’s take a look at the PFF offense and passing grades for Aaron Rodgers and Matthew Stafford over the course of their careers.
In no single season where both QB’s were active has Stafford been the better player.