Posted By:
boxingcardmanYou are comparing an incomplete and skewed sample. Of course later sets have higher % in higher grade; no one bothers to send in a beater from the 1950s. Also, there are soooooo many resubmits among the post war cards that the pop reports are a joke. My 1954 Aaron went through PSA multiple times before the dealer finally gave up and sold it as a 7.
As far as CJ's go, one factor no one mentioned is the rep CJs had (have) for being doctored, primarily stains removed.