Think the Penguins will win this one but I can see a scenario if you can score quickly and put them on their heels, they'll get frustrated because this is "supposed to win" for them and their playoff push.
We play the Rangers 3 times in 7 days later this month which is going to be brutal. Players will feel the "need" to win tonight.
Again, frustration could come pretty easily if you get a lead early and hold it.
You have enough to worry about, don;t worry about tonight. The CBJ is good medicine for any team in a bind. However, since it has been a million years or so since they won in Pittsburgh it would be nice to see.