Thanks guys! You should be the judges next year, lol ;)
They're judged on the movement: walk, trot, conformation: head/neck, frame, legs/feet, and then general impression.
Here's a link to the results for everyone: http://www.vahorsetrials.com/images/...ms/vht10hh.htm
The winning filly is full Hanoverian, it may be harder for her to make it at the top levels. Cav and the 3rd place horse are 1/2 TB, so I think that they have more of a chance... based on breeding alone. But, we won't know until they're climbing up the levels - it'll be interesting to see how they perform in the future.