Kaido in his thirties:
fought against his only top tier opponent -> was badly wounded and got PTSD from said guy -> he only won bcoz of a hostage and later killed said character who fooled Oden because of his "pride" -> 20 years later, he's still shitting in his pants only by fighting Oden's Scrubbards and not Oden himself.
28 yo Jack:
demolished the entire mink tribe after being tired of playing with them around -> fought against two top tiers, a few VAs and still managed to sink TWO SHIPS despite getting his ass whooped by said two top tiers -> he still had his two balls of pure iron to go pissing a country sized elephant off only to tank a country level attack while being pissed that his subordinates won't pull him back from the sea.
#JackTheDrought
#YonkoJack
#BallsOfIron