Tesla and Superweapons.

Exactly.Any government can make a supercharged weapon. But to make it practical, not massively expensive, mobile and actually usable is something entirely different.Even the Navy's rail gun is downright questionable given the necessary power requirements as well as the problems of using it more then once during combat as the rails that make up the barrel are toasted after the first round. We know it works. But is it practical?

I'd disagree with that segmentation. A super weapon is merely a weapon that is vastly superior to one's opponent's arsenal. The machine gun for example allowed a small British platoon to kill thousands of African warriors without losing a man. That's a super weapon. A weapon that so vastly superior that it allows numerical inferiority to have virtually assured victory. A rail gun today would be a super weapon as a single ship with a rail gun could devastate an enemy fleet.

I guess, but his definition seems poor. Especially given historical context.

Alright, then let's go back to the practicality concern of such weapons.