they also only focus on just killing the penalty by only using the guys that produce approximately nothing offensively. every year, they're near the top of the league in pk % but damn near the bottom in SHG. (surprised to see they actually have 4 this year though)
on the flip side, take a team like the islanders who have the league's worst pk % but they lead the league in SHG. perhaps they take bigger risks with the personnel they use while the penguins play it safe.