Dak is good for at least an additional TD per game over the last 4 games. I admire what Cooper Rush has done in not turning the ball over, and I don’t believe that Dak is as good as Romo was. But Dak is better than Cooper Rush. He led the #1 offense in the NFL last season.
Of course, he believes he can take the Cowboys’ offense to another level - because he’s already proven he can. I’m not a huge Dak fan. I think the Cowboys missed their chance in 2016 by keeping Romo on the bench, although I understand why they did it. Dak literally had the best rookie QB performance in NFL history. So I get it.
Dak has every reason to believe he can improve the offense, and it is NOT derogatory to Cooper Rush for him to believe in himself.