nah there are some inconsistencies in op and it was one of them..i mean why would you make yc ap stronger than the strongest creature in the world
King's overall AP is absolutely lesser than Kaido's. King's windslashes are just more lethal than Kaido's, Doesn't take anything from Kaido since that ability is one among his multiple other bonus abilties. Kaido's a CQC Conquerors haki based fighter and in that he schools King.