It's not as big as you think it is. They have more talent, sure, but they were playing two No. 7-8 defensemen and Zaitsev isn't great either. Toronto definitely gives you an opportunity to score goals (as we did) if you ever get into the offensive zone. We have plenty of guys who can help you score goals once you're there, but exiting the D-zone is a systems problem and entering the O-zone is a talent one.
I don't care what "system" the Flyers play, if they face Toronto 100 times, Toronto is winning the possession battle the vast majority of the time because of the differences in personnel.
IMO people place way too much emphasis on "systems" being some kind of magic formula, when personnel matters much more.
People point to things like controlled entries and exits, and possession, being linked with success, and act like it's the systems that are leading to the success. They don't consider that maybe winning teams usually have more talented players, who tend to perform those difficult actions more consistently than lesser players, and it's the superior talent that's leading to the success, not so much the "system."
I've coached plenty of teams in multiple sports. It's a folly to think, for example, you can take the winning systems used by, say, Duke basketball, instruct mediocre players in those systems, and then expect them to both be able to execute those difficult systems and beat more talented teams using those systems. No, if you try playing an extended, aggressive "up the line, on the line" man-to-man defense that works so well for the best teams in the country, but you have inferior athletes, you're going to get SMOKED.
Simply put, personnel dictates the "systems" you are able to run. You can't snap your fingers and use a system that works well for talented teams and expect it to succeed with inferior talent. Coach any team in any sport with inferior talent and you'll learn this lesson FAST. But so many fans think you can just tell your players to play a certain style, snap your fingers, and BAM, success! Not the way it works.