Games are scalable to a point. You can up the resolution, textures, and other non cpu intensive graphical effects. But if you are designing a game around say a Ryzen cpu, using it for better AI, physics, massive increase in draw calls. That isn't easily scalable. When you are going from Jaguar to Ryzen, there is massive increase in CPU performance. Any game designed for for the Ryzen cores would have to be redesigned for Jaguar cores, which would result in massive differences in gameplay (less enemies on screen, simpler physics, braindead AI, less complex backgrounds, and anything else CPU bound).