Well fallout 3 had an "updated " game engine so blah .
Yes bethesda had the original fallout recipe but they used there own recipe thats a different argument. (making your own recipe takes longer than follwing one).What i'm saying is obsidian benefited from have a recipe and rules to follow and it cut down time also a recipe obsidian had to follow unlike the beth comparison.
What I am saying is both Fallout 3 by Bethesda and New Vegas by Obsidian were both made from stratch using the Oblivion engine or what ever it's called. New Vegas didn't benefit much from Fallout 3. Bethesda didn't help create or write or design anything in New Vegas.
Obsidian wasn't following any recipe by Bethesda. All the open world stuff you are talking about is simply because Fallout changed from isometric view to modern view. That's it. That isn't reason enough for Bethesda to only give Obsidian less then a year.
It wasn't like Bethesda gave Obsidian Fallout 3 and asked them to make a few changes. Obsidian was asked to produce a whole new game using Fallout 3's engine. The every same engine Oblivion used. So yeah this is where I am saying Fallout 3 is "Oblivion with Guns."
Bethesda didn't play a huge roll in creating New Vegas. They simply sat back and oversaw the work. New Vegas was created from stratch just like Fallout 3 was created from scratch. But New Vegas was done in far less time.
Three year for Fallout 3 and less then one year for New Vegas, and it wasn't because "most of the work for New Vegas was already done thanks to Fallout 3."