I downloaded all the DLC for Fallout 3 that I didn't have as there was a sale yesterday. Fallout 3 is actually a very good game and a hell of a lot of fun. But, like, you know FFVII and you're in Midgar for ages and then you get out onto the world map and it's like....
whoa... I... the world has opened up to me.

That is the difference between the two. Midgar was fun, but it was just whetting your appetite.