Originally Posted by krupicka
It may also depend on what divisions were playing which course. If you had players with more stable ratings playing one side and on the other side had players playing which are rapidly improving (read: have lagging depressed ratings), you can see that much of a difference even if all conditions were identical. This is why averaging the rounds together is a good thing.
This is the answer I think I was looking for. Pro/Advanced played one course and Int/Rec/Women played the other before switching. If the unofficial rating are only using the propagators for that round only, it makes sense that the 62 shot by the better players would be rated much higher than the 62 shot by the lower players.
This is why the rounds MUST be averaged! Several ratings will go up and some will go down when the tourney goes official I suspect.