Well, From what I could find out so far: Starfield seems to be like TES5 Skyrim or Fallout 4, but unlike the later, which are fantasy and post apocalyspe, respectively, its science fiction. So for example theres Terramorphs which are basically Fallout Deathclaws, and there are special powers the player gains which are basically Skyrim Dragon Shouts, etc. It also has some No Man's Sky elements with procedual content. The most original part of Starfield seems to be the spaceship designer, which unlike many other games is finally truely 3D; if the rest of the game would be more interesting, I would love to have such a thing in a game.
All in all I dont really get how it compares much to Baldur's Gate 3. Even TES5 Skyrim, which would be closer in genre to BG3, doesnt really compare.
