Eevee #SM184
PSA 10 sells for 5.5× a graded 9 ($300.01 vs $54.41).
PSA has given this card a ten 2.2× as often — 8.4% against 3.8%.
How CGC grades work
These are two different pools of submissions, so this compares what each grader did, not what either would do with the same card.