I don't think anyone is doubting the amount of work that went into Max Payne 3, but just in case anyone was skeptical, Rockstar has posted an extensive write-up on the process on its website.
James McCaffrey, the man behind the voice and most of the motion capture performance of Max himself, spent close to 50 hours in the recording booth delivering self-deprecating lines about the state of Max's life.
For the Portuguese dialogue in the game, Rockstar sent its director of audio content, Lazlow (yup, that Lazlow), to Brazil to cast and record authentic dialogue for the hundreds of supporting roles featured in the game. Unbeknownst to us Americans, that section of the cast included Brazilian reality TV stars, famous São Paulo rappers, a Mr. Universe contender, and a beauty queen.
You can check out more about the detailed casting and performance process on Rockstar's website.