I’ve never played NV, but I have several thousand hours in FO3, and from my prospective you can’t role play very well in FO3, unless you just want to be a killer. There are few options to do otherwise unless you use mods and they don’t help that much. Don’t get me wrong, FO3 is a great game and fun to play, but I find it hard to get into any kind of role playing in it. I even have 3 companions who liven up the dreary landscape, but the game is still depressing and I don’t want to role play that type of game. Play it as a shooter and killer and have fun. If you want real role play, try Oblivion, with or without mods.
After that statement ... one is left wondering why you are still here involved in this game?
I assume there is only one awnser ... this is truely an awesome game?!?!
If you took a pole of top 5 games. This one would possibly show up the most. And if NV shows up , its just testament to the root of it being so strong.
My #1 would be starcraft though. (have yet to play #2)