User blog comment:Neowitch/New Z Trailer and Luffy Special/@comment-972068-20121119094435/@comment-3986064-20121119135634

My best guess is that it will be canon. You saw so many characters that are of great relevance and Luffy is fighting a damn admiral, not just anybody. You saw the sketches Oda made f or each character and the costume designs. You saw Aokiji! You saw Kizaru! You saw Garp!! I am pretty sure the anime producers would not allow themselves to interfere so powerfully with the story by adding such fillers.

So it's certain in my mind that it's not non-canon