I'm torn and I voted "other". Clearly his skills are useful in the Reg. Season: Playmaking, PP, and PK. Yet he gets a lot slower, smaller, and ineffective in the playoffs. Matthews can be guilty of the same issue. The thing is that Matthews' 2-way skills are still there in the Playoffs, and still takes faceoffs. Given time and space Matthews can still kill you if given the chance. Marner doesn't have as much "nose for the net".
I doubt I'm contributing much here. I'm so lucky I don't have to be the one who decides.