Loss to Lightning proves NHL parity, 'margin for success is just as slim' NHL.com @NHLdotcom Connor McDavid said watching the Montreal Canadiens reach the Stanley Cup Final showed him that his Edmonton Oilers can compete for the title. "I think the parity in the NHL, it just goes to show the margin for error is so slim, and then the margin for success is just as slim," the NHL MVP told TSN on Friday. "There's teams that have figured out a way to do it each and every year. Obviously [the Tampa Bay Lightning] winning back to back. It just takes the right formula, a little tweak here and there, and it could send a team off to the races.