Don't worry about the round ratings... This isn't a sport with sabermetrics. Worry about other things - more important things like throwing really, really far and making sure you own every new disc that comes out. These things are essential and will improve your game the most. My keys for success also contain a few often overlooked yet important concerns, for example; I concern myself with color coordination of my discs; and I am very concerned about my own hygiene. If more disc golfers did the same, then the ratings might be more impressive and mean something.
1040 rated cleanliness/ 990 rated coordination