In Google play is much better because it is free
But you still have to pay for the DLC
On Steam, you buy the game
AND the DLC for 10$
Also, that's not how things work. If Google play is better then everyone would have bought their game on google play for their PC. But they don't cuz the world doesn't work as that and Steam exists
PS: Free does not mean better, it means the developer has to work hard but still starve to death cuz his work worth nothing and he can't make money