"X of Y", implies equivalence, not equality. Your Grade 3 logic might not be able to process that. Oda literally recycles plot ploints.
Doffy -> Vergo/Trebol/Pica/Diamante. 4 Card Suits. Vergo, the strongest, gets taken out as main villain arc before DR.
Kaido -> Joker/King/Queen/Jack. 4 Face Cards. Joker, the strongest, gets taken out as main villain arc before Wano.
This was the card theme that he drew up all along. Going from suits -> face cards.