The 36.5 is not a bad score. Did any of your beers have the box checked that those went to the mini Best of Show? It that box is checked, the beer was in contention for a medal for a while.
The certificates get sent based on the score range, so more of everyone gets on in that range. A ribbon for a 1,2,3 for the first round is cool. The ultimate cool is a medal at the second round.