Objectively, Montreal could've easily won either game. Both were very, very close. Tonight, the outcome was mostly because of Thompson, who made at least two spectacular saves. We've seen huge momentum swings from period to period, but overall there's nothing unbalanced about this series.
The reason people are complaining is not because of the outcome, but specifically because blatant cross-checks to the face have been ignored. We all know there's a higher threshold for shoving and interference in the playoffs, but multiple sticks to the face is another level of negligence.