Board Thread:General Discussion/@comment-5085906-20130627191357/@comment-25090680-20140723000727

Not necessarily, some VAs can change their voice to such a point you cannot recognize them easily, or sometimes at all until you see their name in the credits.

Example, Troy Baker voices Pein in Naruto Shippuden, compared to his voice as Ocelot, if you didn't already know going in it was the same bloke, you wouldn't know until you see his name when the credits roll.

Maybe they're assuming Otsuka is that kind of VA, i'll be honest i'm not familiar with his work, so IDK if he can change his voice well or not, same with Hayter i'm not too familiar with his work outside of MGS if i'm completely honest.

So maybe if Otsuka is capable of changing his voice to a certain degree, maybe they think he's voicing both, and Hayter only as the 'Real Big Boss' because maybe he can't change his voice too much.