Something else to consider: the Cavies medaling isn't just about the Cavies. It's also about BD, Crown, SCV, Cadets, Phantom, Bluecoats, Blue Knights, Spirit, Madison, etc. Even if Cavies were a lightyear ahead of where they were last year, they'll be the same if everyone else is two lightyears. Cavies may knock everyone's socks off - congratulations, they've improved! But if Spirit knocks everyone's socks AND shoes off, the placement won't improve.
Individual growth is a solo act based on quality of performance. Placement in a competition is a dependency at the mercy of every other competitor. They're related, but not the same thing.