Well, we've hit a bit of a brick wall for now. After repeated attempts to get anything from distributor Red Ant, and an expanded "no comment" from Bethesda, it's unlikely we'll know what the exact differences are between our version of Fallout 3 and the original. Well, that is until the OFLC report is leaked.
According to Bethesda's PR dude Pete Hines, the developer does not "publically discuss" the classification of any of its games, which is understandable, if unfortunate. As for Red Ant, it's like there's no one home. Anything Fallout 3-related is flat out ignored. Not the most professional approach, but hey, what can you do?