I have not seen overall advanced stats for the team. I have seen them for our fourth line and the PP. As for the PHD Group, take a gander at the plus/minus to date:
https://www.nhl.com/flyers/stats
I know plus-minus isn't advanced, but the advanced confirm this for the PHD line--they don't really help us. In fact, they hurt us. And they have a whopping eight goals after 36 games. As for the PP, The Atlantic City Press did a piece that confirms our eye test. Half the shots are missed, most are from a distance. Attack zone time is limited, and there is little tic-tac-toe. I suspect our offense is the same--we are lacking a sniper and a really strong first line.
My gut says we are in the same space, with better effort and more potential, than the Hakstol Era. You remember--if the game wasn't a tightly wound defensive effort, with great goaltending, a loss was in the offing.
What concerns me, and is ironic, is that we've scored first in two of our last three, and lost. Remember, we had a double-digit run where the opponent scored first. Teams scoring first win 2/3rd of the time. So, we've ended the struggle to open scoring and avoid the chase, but we can't sustain the lead. I suspect there's a point at which a good offense helps defensively, and we aren't there. As Al and Ashlyn noted last game, when you've scored nine shorties and twelve PP goals, something is amiss on the PP. But the PP reflects the offense--limited. Things may get better toward season's end, but I wouldn't hold my breath.