Just out of curiousity, what is the point of learning antiquated weapons that you really can't use anywhere, ever? I can see the value of learning how to use a knife, staff, sticks and chains etc, (stuff you'd be likely to be able to grab out of an alley etc, or carry without being accosted) but sword forms, nunchaku etc seem to be of virtually no self-defense value now. Fun stuff to learn I suppose, but almost totally useless except for the sake of it looking cool.
Aside from that, I don't think sport TKD's winning so overwhelmingly. Most of the TKD'ers I've run across have decent groundings in some form of standup grappling (ho son sul) and they're capable of punching and kicking. That's from WTF, ITF (now unaffiliated, but up til a month ago were ITF at least) and even ATA practitioners.