The thing is just that one who was talking about the NPD sales said that Fallout 3 probably did so far not sold more then 2 Million copies aprox. while shipping out 4 million.Dionysus said:It's not a juggernaut like Wii Fit, but the estimates I've seen look pretty good. It got a nice boost because it came out during the Holiday season, and it is doing well compared to similar games like Mass Effect and Fable 2, especially if you combine the sales from the different platforms.
To find out about shipped numbers, you can look at the company's financial reports or look for a press release (Beth announced that they shipped >4 million units initially). Sold-through estimates are trickier. NPD has estimates for North America, but you have to pay to see all of the numbers. Media Create and Famitsu do Japan. VGChartz tries to tie everything together. When you look at the estimates, you shouldn't take the absolute number too seriously, but relative comparisons can be useful.
Now I am not a genius in math nor do I really know if it is succesfull for Bethesda or not. But just from how I imagine it it doesnt seem that good.
Well I guess to see if it was really a great success one has to wait some time.