User blog comment:12th Supernova/750 chapters is a LOT/@comment-3425840-20140618154128/@comment-1595565-20140618185754

There's more than one way that he couldn't do anything at Marineford. Think about the political implications if the revolutionaries actively declared war on the Marines and WG. You don't need to be a poli-sci major to see how that could stir some shit. It would just be a bad move politically for a revolutionary, even if he is acting on his own, to show up, much less get involved in a conflict between the Marines and a yonko.