Even BioWare games can‘t compare to BioWare games. Mass Effect 1 creation of a universe was grand in scope and ambition, just compare the Citadel to later games in the series. And RPG mechanics got stripped down with much more linear progression, too. Let‘s not even start with the newer PS4/XBO games.
Bethesda can very much create universes with deep lore and many factions in this world. This is something I‘d love in a space SciFi game of grander scope.
IMO, Bethesda hasn’t shown that they can create a game with great characters or a great story. Starfield may end up being a great game because of how interesting the universe is to explore and maybe even the gameplay, but I don’t expect it to resemble Mass Effect at all because they aren’t interested in making a story driven game in that vein.