Luisfius: Fallout does make sense...
Navagon: It's not totally abstract. That's not what I said. What I said was it makes sense to a 60s mindset. What causes the abstraction are those subsequent 50 years of scientific and technological progress.
So yes, things like how societies form and other such sociological matters naturally aren't so very different to what they'd be like if the game was based on current knowledge and ideas. But even in this area it is very starkly different if you look closely. Some things you could take to be bad characterisation are in fact down to a different approach in writing the characters.
Point, but still, my main point is that while Fallout 3 had better set pieces, the worldbuilding in it was subpar. Better setpieces? For sure. There
seems like there is more in F3 due to DC being more interesting (even if NV has more settlements, more locations,and more characters), but in the end, F3 was made without taking a single moment to think how the world it happens in could function. Things and locations are there just because. Meanwhile New Vegas does take the time to consider those things. Hell, it is one of the main themes in both the base game AND the DLC.