After the way they finished the last few months of the regular season, I doubt anyone was underestimating them. Its not even Crosby really, he did very little in this last series. It's not Malkin either, it's that second line of Kessel, Bonino, Hagelin and the goaltending of Murray. That second line gave them the depth they needed to compliment the stars and Murray is like the anti-Fleury. Murray has every reason in the world to meltdown and does not, while Fleury has a meltdown several times in a playoff season.
Interesting little fact. The Stanley Cup champion in 1976 had a rookie goalie. The Stanley Cup champion in 1986 had a rookie goalie. The Stanley Cup champion in 2006 had a rookie goalie. Now it's 2016 and there's a rookie goalie that's on a huge hot streak. We need to start a rookie goalie in 2026.