This recent outcome is coming as no surprise really. I agreed with Button yesterday and many others have stated similar opinions that Leafs team composition and player personnel is ill-equipped to go to battle nightly. Sadly I expect many more nights like the ones we saw this last weekend.
Dubas is still young and will learn that you can't simply dress players better designed for figure skating and expect to win hockey games consistently, even if skating has become more prominent in today's game. IMO
You need all sorts of players because it would be too predictable how easy it would be to create a game plan to disrupt the rush, take away the PP and play them big, strong and physical and you will control the game & possession clock.
Leafs don't have a lot of push back on the roster nor do they have energy players that will draw the team into a battle, and therefor neither have the will nor the desire to engage physically to win puck battles through strength. Why do people think Babcock loves Zach Hyman so much, as he is one of the few consistent players at his disposal willing to battle and compete every shift?.
This is only the regular season, everything on every level notches up when the playoffs begin.