Irrelevant. Nowhere in your argument do you make any reference to any sort of length scale.
You keep trying to put the burden of proving or disproving the analogy of Electromagnetism and Gravity on me, yet it is your argument, not mine, that they must be the same.
The theoretical motivation for my saying that they are the same under Newtonian physics goes all the way back to Coulomb. I'm trying to understand your theoretical motivation for saying that they're different, if that's what you're saying.
I see no reason why I should be compelled to show it one way or the other.
Because right now your version of physics isn't hanging together. Rescue it if you can. Either gravity and E&M are analogous in your model or they are not. If not, why not?
It is believed that were the Sun to instantaneously disappear, the 'curvature' the Sun imparts to the spacetime field would take the same time to effect the Earth's inertial field as it would take to suddenly notice a darkness where the Sun had been radiating. Or would it ... would it take "x" minutes to reach the point in spacetime where light from the Sun no longer exists?
It is believed that gravitons and photons exist at a reality rate of 300,000 meters per second in a vacuum, but the spacetime field is hardly a vacuum if fields propagate using it as the medium of propagation ... is that correct?