You're thinking of games Bethesda SOFTWORKS (not Bethesda Game Studios, who make TES and Fallout) has PUBLISHED. Meaning, Bethesda didn't make them, other people did and they just printed the game and marketed it and shipped it.
Yeah, every game that Bethesda
Game Studios has developed has been excellent (at least 9/10). On that note, I expect an average score of 9 to 10 for Skyrim.
Few to none of the Bethesda Game Studios crew takes part in the publishing (or developing) of Bethesda Softworks's non-Elder Scrolls games. For instance, Fallout: New Vegas was developed entirely by Obsidian Entertainment (with no help from Todd Howard and the BGS crew). BGS was and is busy making Skyrim, for all of us TES fans. :tes: