So what ? FO3's level scaling was still horrible and prone to terrible metagaming.
New Vegas at least was able to hide its own much better.
Someone did it in a better way, Bethesda, can't you get a hint ? Can't you just take lessons ?
Let's say it again : level scaling is flawed by concept, by nature. It's just counter-productive in its entirety. There is no point in putting leveling, if you're going to counter it by putting level scaling. If you're going to put "partial" level scaling (like, if someone get 2 levels, then level scaling only goes up by 1), then you can do the EXACT same thing by simply halving the speed or power of leveling. No level scaling required whatsoever.
Level scaling is the exact same thing than giving more money to someone and ramping up inflation at the same time. Just diminish the money gain and remove inflation, same result, no stupid and pointless mechanism, much more believability and immersion.
Isn't "immersion" the point of a huge world open to exploration and of a RPG ? Isn't the POINT of leveling to get stronger ?
Why then use an inherently stupid mechanism that bring NOTHING (like said above, power curve can be adjusted to get the same "challenge" result without involving any amount of level scaling) and goes completely opposite to two of the pillars of the game ?
A world has much more personnality when it actually has a life by itself, with logical distributions of population - people and mosnters alike -, logical scales of power and not revolving around the level of the player in absurd's way. Level should affect how other creatures REACT to you, not how they EXIST.
Please Bethesda, understand this. ANY amount of level scaling is bad.
New Vegas was more successful than Fallout 3, and it had much less of it (still some, so still not perfect, but isn't it a sign when the less of something there is, the better it's for the game, invariably ?). Take the hint, and stop the lazyness of level scaling. Make your world unique, a world to explore and discover and enjoy, not some randomized crap where everything feels the same everywhere and reminds the player more of Diablo than a real world...