I thought about that, too, because I did see Kessel set up many beautiful goals with his passing ability. But I don't think that's the point that McGuire is making with his critcism. I think his point goes more toward team chemistry and the idea that some players help the players around them elevate their level of play in big games through leadership or setting an example. It's more of an intangible quality that can't be seen or measured with stats.
Did the Sioux miss a beat when Drew Stafford went down with an injury and Chris Porter took his place on the Toews line? If they did, it was barely noticeable. It's probably one factor that elevated Toews in the eyes of NHL scouts.