Actually the extra languages are just an excuse usually it is not too much effort to translate a game, it even is less effort if you can do it by text, if you can cover english you can cover most latin/cyrillic based languages parallely at the same time.
The delays are purely trying to get most out of sales.
Nintendo of Europe is trying not to overcrowd the christmas season they are late with some titles anyway, so I assume super paper mario will be their christmas hype title and smash brosh is simply delayed because of that.
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