(NO SPOILERS) What did FNV do better than F3?

As someone who didnt really like Fallout 3 and is starting New Vegas id like to know what the community thinks New Vegas did better (Gameplay or Story wise) and what I should be excited for.

As someone who didnt really like Fallout 3 and is starting New Vegas id like to know what the community thinks New Vegas did better (Gameplay or Story wise) and what I should be excited for.