is one piece episode 310 filler?

The Marines of the Buster Call are stunned by the announcement of Rob Lucci's defeat. The thought of a pirate able to defeat one believed to be the most powerful, most ruthless Agent of the World Government fills all of them with dread at just what the Straw Hat Pirates are capable of performing.

On the other side, the Straw Hats and their ally Franky are all reinvigorated by Luffy's victory, and they begin the push to clear the way for their escape. Suddenly, the Den Den Mushis are filled with voices of congratulations.