Of course I agree with your assessment. However one last thing to consider in all this is the Penguins played as many games, and deep into the season, as Detroit did. I'm a firm believer that these extra games played take something out of these players the following season...both physically and emotionally.
Most of the Pens skill core is young and I wonder how that will effect these guys. Since last year the Pens have lost Marian Hossa, Ryan Malone, Sergei Gonchar, Ryan Whitney, Gary Roberts, Georges Laraque, and to a lesser extent Colby Armstrong/Erik Christensen. They pick up Matt Cooke, Miroslav Satin, and Ruslan Fedotenko. The scales to this are weighted heavily to the have nots.
Think back to what kind of Anaheim Ducks squad showed up for the first half of the season minus Neidermyer, Selanne et al. I think we same the same result, or worse, in Pittsburgh for October thru December.