This might sound like an excuse but we've had sickness going through the room these playoffs before (Johnson was confirmed, Hedman suspected etc.). Cally missed game 2 with the flu, who knows who else had symptoms as well but stayed in the lineup for game 3 (Garrison caugh)? Either way, I expect them to come out flying like in game 1 after that embarrassing showing last game.
Pittsburgh's strength right now is their speed and possession - things we are usually known for as well (at least this and last year's playoffs).