Clarification of auction description

[CardMD]

Can anyone clarify what they meant below? Is it that the grade should be lower? Is that a warning that it was overgraded or missed by PSA? Or is that appropriate since the front is spectacular and would be graded higher? Sorry to out a card in auction but I was hoping to try to understand the true value. Thanks


Graded EX 5 by PSA. Hall of Famer. “Sweet Caporal - 150 Subjects” back. Among a total of more than 700 copies recorded in PSA's census reporting, just forty-seven examples have been placed at a higher, unqualified tier. Natural corner wear is extremely mild on this attractive specimen of the classic Cobb illustration, and its frontal appearance is extraordinarily clean and fresh. Close examination of the brightly printed reverse side reveals two spots of superficial paper loss at the left edge; the presence of these discrepancies is inconsistent with the card's assigned grade. Excellent condition.