When the review embargo first dropped, Starfield was sitting at something like an 88 on Xbox and an 89 on PC. Not 90+ the way I think Bethesda may have been hoping, and yet still extremely good.
How i see it is al alternative falllout timeline aet in the future. A lot of the basic game mechanics are straight upgrades from Fallout 4, with slightly better faction writing than 4, and slightly more rpg checks to make an experience feels better than 4. IMO i dont think its better than New Vegas, but its a direct upgrade from FO4