He could have been analogous to the A-bomb ... if it was more than one of him. He's very powerful, but not wipe out entire cities powerful. He can handle himself in dangerous missions where other men might be killed or captured but he's still one dude.
Also, since he's gonna be resurrected in the present. Would he have the same effect on a modern world? Would everyone see him, be inspired. Would the enemies be afraid in their hovels fearing not only the American living machine but those of their own kind who would turn on them and do right by his example.
Do you mean he could be a symbol for extreme nationalism? That's what we're arguing against right now.