I think they are just that bad.
Individually, we got great players in AM, MM, Willie, JT, Reilly, to lesser extend, Knies, Bert, Domi, Calle, even Kampf as a defensive specialist. McCabe, Lilly, Beniot might not be great but they get the job done as bottom 3 Dmen.
But they don't play like a team. When they do, they are one of the best in the league.
This all comes down to Keefe's coaching.
Say what you want about Babs but Babs' Leafs plays more structure and system. Now do and can the players do the stuff is another story.
Keefe really relies on the top guys to take over games and win instead of building a team that win with the top guys.