User blog comment:Pandawarrior/Mutiny on the Bounty/@comment-208.96.127.154-20151206142921

Everyone keeps bringing up Ace and his being Roger's son, but Sengoku never revealed to the general public that he was Roger's son until his execution.

It seems likely that it didn't factor into his bounty, both to keep that secret and because it didn't make him much of a threat to the WG.

Luffy is the son of Dragon and that only ever made him someone to "keep an eye on". Even after his lineage was revealed at Marineford, his bounty only went up by 100 mil, and that was mainly because of the jailbreak, the assault at Marineford and punching a tenryuubito.

The other thing to remember about Jack is that he's been active for years longer than Ace had been, so even if we're making the "Yonko's right hand" comparison, the collateral damage tally for Jack is still probably way higher.

And ALSO, all that stuff that other people have been saying about Yonko bounties ...