Posted By:
T206CollectorThe whole purpose of grading is not to establish that a 4 is always a better card than a 3. Collectors who think that really miss the point. The purpose is as follows:
If you see a card with sharp corners on ebay, but it only got a 3 then you know it is more than likely creased. Likewise, if you see a card with rounded corners but it got a 4, then you know it is more than likely not creased. Even though I collect PSA 5 T206 Hall of Famers, I would not bid on PSA 5 T206 with perfect corners for this very reason, because I'd rather have slightly rounded corners than a crease.
It's more about learning what cards earn what grades then it is about redefining the grading scale. If you redefine the scale, the learning process would start all over again.
Problems arise when two cards with identical features are graded differently, but that's a whole other link....