As a matter of fact, Bethesda isn't well known yet, at least when comparing to some other companies. It's certainly more known than 1C for example...
Anyway, the same engine would be used, therefore I don't think that it'd be any better. There are plenty of features, the only things are the storyline length and undetailed close-up textures. The former depends on the GDD (unless it's tremendously cut, but I doubt that), while the latter could possibly be of better quality.