What this means is that Draisatl, who has a narrow 4 point lead over McDavid in the points race, now has a chance for some much needed breathing room. If Leon can pick up around 8-10 point in the next 2 weeks, that will be some good breathing room and perhaps enough to secure his very first Art Ross Trophy, snatching it away from McDavid. Probably not the way Leon wanted to win this trophy, but I don't think he will be giving it back or apologizing for the win.
I don't think McDavid & Oilers fans give a crap whether or not Draisatl ends up passing McDavid in points total. McDavid's injury means the Oilers may very well miss the playoffs again. They're currently not in the playoffs and every single point counts from now on.