don't think anybody expected that the first 1 billlion bounty would be attributed on a Yonko's first mate. The best bounty we've seen so far was Ace's with his 550 million berries and he also was a Yonko's first/2nd mate (Don Chinjao was also more than 500 millions).
But please guys, don't go assuming that Jack is two times stronger than Luffy just because his bounty double.
We all know that there are a lots of fact that can make a bounty rise, for example :
- strenght of course
- dangerousness of the character due to his knowledge or inheritance (Robin and her 80 million bounty being an Ohara archeologist, Ace being Gol D Roger's son)
- merciless towards civilians or a whole country (Eustass Kid is notorious for causing huge amounts of civilian casualties, so he was the Supernova with the highest bounty 315 millions.) I think Jack is in this category as well.
- Being in conflict with the WG. The best examples are Dragon being the Most Wanted Man in the World because he is the leader of the Revolutionnary and Luffy burning WG's flag, punching Tenryubito etc...
I won't details all the bounties, I think everyone get the point. So In my opinion there is no point to predict Yonko's bounties (like i've already seen in this forum) or to judge a character's strenght from his bounty, it's not valuable anymore.
So now that i get rid off all the boring stuff here is the thought that I wanted to share with you guys.
In the way that ODA introduced the different bounty in the story there is some kind of pattern which can be separate in 3 steps. Let me explain myself.
FIRST STEP : Bounties = strenght
Here are the first pirates bounties in One Piece :