Ew no. Fallout 4 is a much better game with a lot more depth.
Outer Worlds felt WAY too small for a game of this genre. I was really surprised when I finished it, I don't remember how long it took me, but probably 25 hours or something while doing side stuff too, it felt like the story was only 5 hours long or so. There were not a lot of places to visit, the maps weren't that interesting, and the characters were moslty bad (and so ugly lol).
There was something that felt unfinished, really lacking, in Outer Worlds. It wasn't terrible to play through, but it just felt like a minor, forgettable game, really not on the same level as Fallout 4, at all, which I got almost 300 hours out of.