Because buddy, I've watched all Canada's games, and those stats don't mean a hell of a lot to me. Staal's a rock in his own zone, and has the worst +/- because he gets the toughest assignments. Bourdon, on the other hand, contributes offensively - but he's a defensive liability, despite what the numbers tell you.
I'm a Pens fan, so by rights I should be pimping Letang, who's also been on the ice for 0 goals against and actually put up more points than Bourdon. But Staal has been the class of the tournament on the blueline.
Defensive liability??? Are you kidding me? Bourdon has covered Letang's mistakes just as much as the other way around, which hasn't been many. I can think of two mistakes of Bourdon's which have led to mediocre scoring chances. One on the powerplay, where the puck came to his backhand and was bobbling, leading to a semi-breakaway where Letang read it and was there right away. Another was where Bourdon made a pinch where the puck squeaked by him for a 2 on 1, whereafter Bourdon adjusted himself not to pinch anymore. I can think of at least that many times Bourdon had to cover Letang. Bourdon is a +17 in 13 games in the Q, good for top 20 in the league, while playing only a third of the games as the top players. A +3 as well as being on for 0 opposing goals playing top 4 minutes definately doesn't warrant being labelled as a defensive liability.