There were plenty of good reasons why the Pittsburgh Penguins won the Stanley Cup last spring. Coach Mike Sullivan came in and instilled a new culture of relentless pursuit of winning that paid off in a big way. Matt Murray was an incredible story in goal. Kris Letang was a beast on defense.
But if you had to distill it down to one thing, the Penguins won in large part because teams couldn’t match up with their forward group. Try and stop Sidney Crosby, and Evgeni Malkin's line would perform.