For table explanation, scroll down to the bottom of this post.
How Nashville can score: The Predators' strength seems to be in perimeter scoring - their shooting percentage from outside of 10 feet is above average in all the different range slots, especially from 50+ feet, where they score almost twice as much as the rest of the league. The Sharks goaltending might well have a weakness there, as their save percentage in the 50-59 foot range is second-worst among playoff teams. That could translate into key goals for skilled Nashville blueliners like Shea Weber and Kimmo Timonen.
How San Jose can score: The vast majority (3.22 out of 3.74 total) of San Jose's goals are expected to come in the 10-29 foot range, where the perfect combination comes into play. The Sharks generate more shots there than average, they score at a higher than average rate, the Preds give up a relatively high number of those shots, and their goaltenders fare poorly in stopping them. The 10-19 and 20-29 foot ranges are the only ones in which Nashville's goaltending is subpar, yet those are exactly the ones in which San Jose is the strongest. That, to me, spells trouble for the Predators.
Summary: This picture is pretty ugly for Nashville - it says that on neutral ice, the Sharks would be expected to outscore the Predators 3.74 to 3.01. If we use Jeff Sagarin's rule of thumb, giving the home team in each game a credit of 0.25 Goals, San Jose still leads 3.74/3.26 for the games in Nashville, and dominates 3.99/3.01 at home.