Good point, but I am not ready to concede. (At least not fully)
Important limitation can be earlyness of detection, and equipment delivery/deployment speed, and redirection rate/speed.
Attacker could work with slow equipment deployment and redirection rate (maybe take years), but defender will need certain ratios between detection esrlyness and speedy deployment of equipment to start the deflection.
And if I’m mr Evil, I would pass the commet through some gravity assists to increase the speed - to bring the example closer to the bullet case.
Important limitation can be earlyness of detection, and equipment delivery/deployment speed, and redirection rate/speed.
Attacker could work with slow equipment deployment and redirection rate (maybe take years), but defender will need certain ratios between detection esrlyness and speedy deployment of equipment to start the deflection.
And if I’m mr Evil, I would pass the commet through some gravity assists to increase the speed - to bring the example closer to the bullet case.