That specific core of Bruins players with Pastrnak hasn’t won a Cup, and when the Bruins last won a Cup in 2011 Marchand was a 40 point rookie so he was a decent piece but not the core piece yet that he is today. The Bruins have experienced a lot of losing with this current core, and in the last 9 years they’ve made it past the 2nd round twice (Stanley Cup losses to the Hawks, Blues). The major change between previous years and this one was coaching.
People here seem to just be looking for excuses to rag on the current Rangers core, probably with some underlying agenda. Maybe they hate one or two of them. Maybe they want the kids to get more ice time so they rip on the core blocking them. Kreider is an overpaid player who should be on the third line. Zibanejad shrinks in the face of adversity. Panarin is paid too much. Whatever it may be, the core is not why the team as a whole doesn’t know how to defend as a team. That’s not explained by a few individual players. It’s a team concept and it doesn’t exist here. That’s coaching.