Usually, these sort of seeding systems are just designed so that the very best players don't meet in the early rounds and eliminate each other.
I was considering signing up, but I'm so new at this, I doubt I'll last 10 seconds against even the worst players. If you need bodies though, I'll show up and fly.
Man, I'm not any good either, but these are great fun, and really excellent learning opportunities. Even if you get totally owned, you have the film to study of a pure 1v1 fight, no MA interferences, and your opponent at your disposal. Usually guys will stick around with you and fight a few more. If they completely dominated you, most guys are good enough dudes that they'll gladly help you out or let you pick their brains. I guarantee if you participate in a couple of these you'll get better every time. And last but not least, you can meet some really great guys that you didn't know before. I met Changeup in this past duel, and he's one of my favorite guys to fly with nowadays. It's absolutely worth getting into, you'll have a great time!