Fallout 3 dev "initially felt a little touchy" about New Vegas' glowing reputation because Bethesda's work building its foundation went unrecognized.

source https://www.windowscentral.com/gaming/zenimax-bethesda/bethesda-fallout-3-dev-initially-felt-a-little-touchy-about-new-vegas-success-because-they-put-in-all-this-effort-for-its-foundation