Buffalo's Jack Quinn is upended by Montreal's Arber Xhekaj. AP The pendulum swings in a best-of-seven series in the Stanley Cup playoffs , especially a tight one, are profound. Ahead of Game 4, it seemed like everybody was backing the Montreal Canadiens to get to the Eastern Conference finals over the Buffalo Sabres. But after Buffalo’s win Tuesday night, the narrative has shifted back to this series, and Thursday’s Game 5, being a coin flip. The oddsmakers are in agreement there. Sabres vs. Canadiens odds, prediction There wasn’t too much to glean from Buffalo’s win in Game 4. The Sabres caught a massive break with a one-in-a-million goal, and they held firm on the penalty kill, swatting aside six of seven power plays en route to a 3-2 win. It was a win, but not one that would enstill you with much confidence moving forward. The one thing that should stand out was the play of Ukko-Pekka Luukkonen, who made his first start since Game 2 of Round 1.…