It is the same. I guess the editor thought a real recording of thousands of men doing war chants was worth using, even if they were speaking the wrong language? The only people who would catch it are Zulu speakers and people who have a very clear recollection of one of the 20-30 songs in that movie. I spotted it because I'm a big Zulu history nerd. No one else who saw the movie with me noticed or cared when I mentioned it.