I actually think everyone aced it and ends up in the 80-100 percentile group. "This site says I know more than 80-100% of users" is good for word of mouth marketing.
In hindsight, it was actually a pretty good quiz for judging if a candidate knew a good bit about many different areas of development, architecture, and sysadmin.
I know I aced the test not because they told me I did, but because I knew the answers to the questions.
Perhaps my enjoyment of the quiz and the possibility of having an interviewer role set me up for greater disappointment that the whole thing turned out to be (or seem to be) a sham.