My only assertion is that Rome II, at its lowest actual settings, could probably run on the PS4. Not a hypothetical, stripped-down version of Rome II, but the actual, real-life game. The actual settings let you lower the resolution, the graphics, and even the unit sizes. Doing so on the PC doesn’t turn the game into something that isn’t Total War.
I also asserted that such a port would be a bad idea, so you don’t even need to treat this as another front in your “pc vs console” eternal struggle.
I objected to your Witcher 3 strawman because there is no combination of actual Witcher 3 settings that could run on the PS2, and that’s obvious.