AWDF is an association of working dog groups. The sports analogy would be like the NCAA. The member dog clubs would be like the Big 10, Pac-10, Big-12 conferences.
USCA is a member of that organization as are USRC (Rottweilers), AWMA (Mal's), DVG and others. The member clubs sanction and hold their own trials and championships. The GSDCA/WDA group is not an AWDF member.
The various AWDF member organizations now use a common scorebook. However, each club still maintains it's own scoring database. That is, you get a scorebook from USCA and it comes back as an AWDF book with a USCA stamp.
AWDF is recognized by the FCI, an international dog sport sanctioning organization
AWDF does have a very active all-breed working dog championship. The winners of that can go on to represent the USA in the world FCI championships.
When there is a tie score in a championship, the tie-breaker for placing are the respective scores in protection, obedience and tracking (in that order). So, if the total score was 290 and one dog had 98 in protection and the other a 97, the first dog would be placed higher. If they both had a 98, then we use the obedience scores to separate the placing.
USCA and others require their judges to be active in training and in the breed. GSCDCA (AKC) seems to have no such requirement. When they were flirting with that WDS (Working Dog Sport) program, they attempted to sanction performance judges by having them watch a Power Point presentation.
Not too long ago, I saw a post on another board where they looked at the resume's of the judges at a German Shepherd specialty show. None of their judges had any association with GSD's. One raised Yorkies. The others also raised various non-working breeds.
It's important to have judges that know and understand the breed. If you look at the resumes of the USCA judges you will find them all have been very active in trialing and often in breeding over the years.
One of the most respected judges and koermeisters in Germany is Wilfred Scheld. I've been told that the working people flock to any show and breed survey he does in Germany.
We had the good fortune to have him do a conformation show at our club a few years back. He has the uncanny ability to look at a pedigree and give a very accurate call on the dog's characteristics.
He's very active in herding -- at that time he was president of the FCI Herding Commission. I had some of the old Leerburg herding tapes for a German herding championship in the early 1990's. We turned off the sound track and he narrated the whole tape. As he recalls, that was the year the 'sheep were crazy'.
His uncle Alfred bred and owned Grief zum Lahntal, once ranked at the fourth most influential stud in the breed. He told several interesting stories about the dog. Alfred also bred Sagus vom Busecker Schloss and Natan vom Busecker Schloss
(
http://leerburg.com/natan.htm ). He also very clearly recalled Natan. One of those people, that if you ever get the chance, you sit, listen and learn.