User blog comment:Kaido King of the Beasts/Chapter 821: Last March of the Elephant/@comment-5303512-20160331140559/@comment-5303512-20160331141453

yup, and I was talking to someone about Power scaling, that all these top tier one piece characters were suppose to be large island tier stats. like Chinjao could split an ice continent in half, Garp beat Chinjao's head drill which means anyone above Garp could be that level strong.

also, when Jack was first introduced in the flashback, I didn't have much hype for him since he could not wipe out an island of animal people and had to resort to using poison gas.