The two games show, that Bethesda is able to create different amospheres in various games. That's my point, and my hope.
What different atmospheres?
A colourfull and vivid world of magic, swords and linear storylines as compared to a green/grey vivid world of magic, swords and linear storylines?
The difference between Oblivion and Morrowind is only obvious to fans of TES. The difference between FO1/2 and TES is obvious to everyone.
Bethesdas trademark so far is RPG's set in open-ended gameworlds with linear storylines as seen from the first person perspective. (No I don't count Startrek Legacy and the rest of their failures)
What worries me is that their above mentioned failuers scared Beth from doing anything else than what they are "good" at and what they can sell.
I have never liked, nor accepted that people were afraid FO3 would turn out to be Oblivion with guns, but the little info we've been getting about the game so far indicates it might just be true.