Being a Google Partner Agency means that we had to pass a large number of tests to understand the Google adwords system to a very throughout degree.
That means we are certified by Google to manage AdWords campaigns including specialized AdWords areas including Search Advertising, Mobile Advertising, Shopping, Video & Display Advertising and that we deliver significant enough performance to remain part of the program.
It should be noted that Google is constantly tinkering not just with their search algorithm but with their adwords system as well in an effort to sell more ads. That means things change pretty rapidly so much that I have found their own tier 1 support is usually pretty far behind the curve on the systems knowledge.