Yeah I finished my playthrough of bg3 just in time for starfield. Been playing it constantly since. Loving the game. Hard to compare the two as well, they're rpgs sure but very different. Should pc gamer start writing articles about the lack of base building in bg3?? Bottom line is if you like Bethesda games, you'll like Starfield. Didn't like Skyrim or Fallout very much? You won't like Starfield.
I am on the same page as you. New Vegas especially since it was really Obsidian not Bethesda and it shows. FNV is in my top 5 of all time. I liked Skyrim enough. Not a fan of Fallout 3, 4, or 76 so I have a feeling I am not going to like Starfield much. Though I am going to give it a try anyway.