Aragorn's political skills.

[Hot, crispy nice hobbit]

Somehow, I can't seem to place Boromir as the rebellious kind:

Boromir, five years the elder, beloved by his father, was like him in face and pride, but in little else. Rather he was a man after the sort of King Earnur of old, taking no wife and delighting chiefly in arms; fearless and strong, but caring little for lore, save the tales of old battles

Of course, this version of him may have been chiselled to perfection after long discourse... But if I am to judge Boromir's character simply by his actions and thoughts in the book, I still would not be able to place him as a rebel...

His brother, of course, is another story...