Chris Groff I am weirdly good at splendor and yet absolutely terrible at sushi go.
Fwiw, I drew myself into a huge deck, promoted every turn, and sat on/built two strong provinces. I used promote and place on top to build defensive hands when it came to fight time, and still had to get lucky on rolls.
I’m pretty sure that path is a lot like scythe in that you can get away with engine building only until someone brings a fight to your door. Maybe also why sushi go, with competing hands, messes me up more than the open ladder climbing of Splendor.