Not even I would put Dak above Rodgers, but he's better than Hurts, Lawrence, Jackson, and as previous poster points out, he's FAR superior to Cousins.
And I think Dak is gonna have a bigger season than Allen and Burrow - because their division is about to swallow them up. And as for Herbert, Dak has better numbers than he does anyways. Including surpassing 100.0 rating twice - a mark Herbert has never touched. Surpassing 12 wins 3 times, a mark Herbert has never touched. Herbert has had 5000 yards once, but that's only because he's played in 17 games while Dak has never played 17 games before in his life, and he got hurt early on in 2020 - otherwise he shatters 5000.
I'd say this ranking looks about right.