Posted By:
Rob D.Apologies in advance if the following isn't that unusual. I'm not really a "registry collector," but I've entered a few sets on SGC's just for the heck of it, so it's quite possible I don't "get" all the nuances of a registry.
Before today, I had entered 28 of the 30 cards of the 1933 Butter Cream set on the registry. The tale of the tape looked like this:
Average grade: 40.00
Average weighted score: 39.01
Set superiority: 33.78
Today I got card No. 29 -- a Lloyd Waner graded "Authentic" -- back from SGC and entered it. The new tale of the tape:
Average grade: 38.62
Average weighted score: 37.43
Set superiority: 33.78
I totally understand why the average grade and average weighted score dropped after the addition of a card graded only "Authentic." But the fact that the set superiority stayed the same is puzzling to me. The way I interpret that is, based on the formula, the "superiority" of the set is no different from having 28 cards or having 29 with one being graded authentic. That doesn't seem right to me, because I would think that a set with 29 cards -- even if one doesn't have a numerical grade -- is "superior" to a set with 28 cards.
It could be that I'm not correctly comprehending what "Set superiority" is supposed to convey. And, honestly, it doesn't bother me because I was thrilled to add the Waner. Again, it just seems a little odd.