Having the best goalie in the world and a 5 man defensive unit where no one is cheating offense creates wonders for that. I haven't looked at any heatmaps relative to the rest of the league, but watching the game tells me that it should look pretty ice cold.
I wonder how much of that is driven by just how deflating it must be to be the best player in the world and being so tired of having to carry everyone. Without McDavid, that team is nothing. Not even Drai is good enough to carry that. Their defense is f***ing putrid, the depth is thin, and they can't get a good goalie. That has to suck.