To be fair he's only working with what was given to him. He's dubbing the text as it comes in, which is slooooow in SS. If the game is designed around it, it w/could be more natural.
who cares about the text. he reads the sick with anger line mostly when ghirahim had disappeared. the body language is when he's saying each word, and the guy says it too slow and too loud.
if you have the time to put in your favorite danny elfman tune, then you have time to actually pay attention to the animation.