This is a close one. I see Drai in a little bit of a different role this season, one closer to the center role that everyone wants him to play so badly.
The reason he has been playing huge minutes is because Tippett has been relying on him in the Oilers toughest situations on the draw, and in tight spots on the penalty kill. He is currently averaging two and a half more shifts than McDavid per game.
I see Drai being used in situations outside of goalscoring, whereas Matthews is used pretty much exclusively for his goal scoring ability.
Matthews has an elite shot, and some great skill around him. If he can stay healthy, it wouldn't surprise me if he outscores Drai.
Not at all an insult to Drai, I think he has been the Oilers best player thus far this season. Connor has looked a little rusty so far, and Drai has taken over multiple games. I personally didn't like his game against the Rangers, but he ended up with 3 points... guy is a monster. Impossible to take off the puck.