However, I have to strongly disagree with the "no other country has produced a superhero worth mentioning".
Me too. Here's some more international heroes:
Kaliman, from Mexico.
http://www.universohq.com/quadrinhos/2004/imagens/kaliman.jpg"Caballero con los hombres; gallante con las mujeres, tiendre con los ninos y implacable con los Malvados!" (A man amongst men, a gentleman with ladies, tender with children, and relentless with those that do evil)
And let's not forget the superheroes of the Phillippines, Darna:
http://www.marsravelodarna.com Created by the genius Mars Ravelo.
And what about Alan Moore and Alan Davis's brilliant work with Captain Britain?
But it should be stated that the columnist has a valid point: superheroes are of American origin, and while they exist elsewhere, the superhero phenomenon, like Jazz, is for the most part unique to the United States.