neither chapter shows you get a bounty for having a strong crew under your command.
957 just shows Saint Shanks men made names by themselves without their captain carrying their bounties.
Oda already answered in a sbs that the captain inflates the subordinates bounties not the other way around
It's a bounty for the Emperor and everysingle one of them was listed with strong crew
If a Emperor's bouny is based solely on individual strength, people would list that Saint Shanks has strong haki and shit
But nope, in a Saint Shanks bounty, Brandnew, instead of praising Saint Shanks' individual strength, decides to praise his commanders
Do your math