Nintendo don't do the localization. Square enix hired an Italian company called Binari Sonori to do the localization on the first game. There's virtually no Nintendo staff actually doing anything on these games that isn't handling the money or the marketing. And the second game probably is the same situation.
Here's the source:
http://www.siliconera.com/2013/12/16/heres-worked-bravely-defaults-english-localization/







