Nobody can prove PSA is better than anyone
The biggest graders sell certainty, and none has been measured against a common, independent benchmark. Until someone grades the graders, a PSA 10 is a reputation, not a verified standard.
Ask a collector why a PSA 10 sells for more than the same card in a $15 slab, and the honest answer is that the market says so. Not because anyone has shown that PSA grades more accurately. Nobody has. There is no independent, widely accepted benchmark, no referee and no published comparative data that would let anyone prove PSA is more accurate than the smallest grader on our scorecards, or prove it isn't.
Opinion. By Cardboard Journal, 17 OctRead the argumentEarlier
AGS passed Beckett on TCG volume with a fully automated grade
The TCG volume is real; check your buyer accepts a machine grade before you commit.
RCG includes subgrades on everything, and collectors still flag QC
Subgrades at this price are genuinely unusual — the QC reports are the reason to hesitate.
WCG grades at $9 a card and has no cert lookup to back it
No cert lookup means a buyer cannot verify the slab — that alone rules it out for resale.
KSA leans on eye appeal and vintage, not mathematical perfection
Send vintage here where eye appeal is the point; send modern chrome somewhere stricter.