Sure, but VLR did release several months earlier in Japan than in America, so the Japanese cast was definitely the one that came first in that case. As for ZTD, sure the localization happened while the game was being developed, but I doubt Uchi gave directions to the English cast, but he definitely did to the Japanese one. And by "original" he might mean voice actors who were in VLR, and only Phi's voice returns for the English dub in ZTD, Diana's voice is the same as Luna's in Japanese, but it's someone new in English. Same goes for Sigma.