This question is kind of about the Set registry but not a particular one..
more to do with the overall dynamics of how it's calculated. Does the number of cards graded with the set and the % of 10's change the scoring?
For example - in the set I just completely from the 70's, only 8 cards have been graded PSA 10's, 10 or more times. There are probably around 15 that have NO 10's and half the set that has 4 or less 10's. Would these statistics make completing this set have a higher score?
Because if the set I just completed had 25 or more 10's of each card, theoretically it could be easier to complete (just based on the number of 9's and 10's available).