Welp, they have injuries and a set of goaltenders that too often can't stop a beach ball.
Their record against the Bruins in the regular season was putrid this season. And our Leafs have failed to beat the Bruins in the last 4 times they have met.
Our Leafs have been so inconsistent this season that they were unable to keep up with the Bruins in the standings.
Also, the Bruins live in are in our Leafs minds rent free.
So, with the above, I thinks a four game sweep is possible. It's up to our Leafs to perform way above our expectations against a foe they have had problems beating.
JMHO.