There are not "course ratings" there is no such thing. There are ratings (based on the PDGA rating system that is) for the events, and it is based on having at least 3 rated players to determine the ratings for that round in particular.
After you folks were kind enough to notify me of the error on the ratings, I worked with the PDGA (they actually did it, thanks to Steve Ganz and Andrew Big Dog, and Chuck Kennedy) to let them know of the error in the submission of the final TD report for the leagues. In that I failed to alter the league locations and they got it corrected.
So to answer the question, again if you play OPEN in the Wide Open you score will almost guaranteedly be higher than in other divisions because of the pool you play in has players with higher ratings, that in turn allows for a higher rating on your score based on the people you are playing with.
If you want higher ratings play open......it is a silly thing personally, but it is the only silly thing that is "agreed upon" by our current players.