Board Thread:Theories and Speculation/@comment-25645405-20150722123620/@comment-734582-20150723123148

UltimaDude wrote: @Minamoto15 It's not a matter of opinion -_- I don't see the problem with using Anime as a secondary level as canon (that is, true unless directly contradicted by the Manga). Event though in the Manga they don't recognize eachother, it would be weird if they did because in the Manga they never met. That doesn't mean that the events of the Anime could not have been true in one way or the other. E.g. if you consider the Anime an alternate universe, the one point of difference could simply be that in the Mangaverse Naruto was a day or so too late and Utakata was already killed. So Nagato dealing with utakata would still be "true" even if other details are "false".

So in short, i think it's not necessary to write off the entire Anime just because it handles things somewhat differently.