At a very low rate.
Why would you even say, "But he can make great passes?" it's not what I'm talking about. What I am talking about is obvious.
Demidov will set up Slaf 4-5x times per game in prime scoring chances. Caufield, over a large number of games sample, it's much less than that. Caufield is not a prime playmaker, he can score, and he's good at everything. But he wants to shoot and score mostly, and he doesn't drive the net. This is a black hole for Slafkovski because the puck rarely comes to him in a shooting position if it doesn't come from Suzuki, and there's seldom a dirty goal because Caufield/Suzuki doesn't really drive the net.
Caufield is as good as a perimeter player, but he doesn't have the mix of decision-making patterns to contribute to Slaf. "Why doesn't Slafkovski score more?" He contributes to the pair of Suzuki/Caufield, but he doesn't get much contribution from them.