Relative how amazing they are in general, I don’t think Marner and Matthews are particularly good at entering the zone on the PP. I really don’t think Thornton and Simmonds helps them there either.
My main issue with Simmonds on the PP is he isn’t really a goal line option. Like it’s great that he can stand in front of the net and bang home rebounds, but the thing that made JVR and even Nylander last year so effective was that they were able to be a pass option on the goal line as well. Simmonds can’t do that at this stage of his career. PKers just have to pressure Matthews and Marner and their only outlet is back to Rielly.