User blog:Tekkphreke/Question on Zanpakuto Rebellion

I am aware that this story arc exists in only the Anime and not Manga, however, there did seem to be some consistencies between this arc and the Manga, such as Chojiro's zanpakuto having lightning abilities, but anyway, my question is since Muramasa has drawn out all the Zanpakuto spirits wouldn't that be the equivalent of what happens when training to attain Bankai, and if this is the case then wouldn't the Shinigami that had defeated their Zanpakuto be able to access Bankai?