[azornathogron]

I would guess the key factor for which games were pushed in marketing was the popularity & name recognition of the games, not any particular technical aspect. I think Stadia was also good enough tech to support the games they were marketing, at least for a casual player. I played Cyberpunk on Stadia and it was plenty smooth enough for me, but then I'm only a casual player.

Also my impression was that Stadia was aiming for "a console without the console" experience, and IMHO Civ and Sim games tend to be more PC focused (complex input requirements etc).