is one piece episode 369 filler?

Luffy discovers he's captured Gecko Moria's shadow instead of the real Warlord, and he runs off to find the real Moria. Elsewhere, Zoro decides to test his new sword Shusui against Oars, but when he swings he discovers he hasn't mastered the sword enough to cut Oars the way he'd like.

Oars tries to crush him, but Zoro dodges. In the middle of the fight, the giant ship that is Thriller Bark begins to shake because Oars had broken the rudder earlier and the ship is not anchored.