What makes a bounty manager better? It's not about the success of the projects they introduce, it's about
1. How the handle the campaign
2. It's about fulfilling what was promised to bounty hunters
3. It's about fighting the fair fights for bounty hunters
The success of a bounty project is not in the hand of a bounty manager, the ball is in your courts, you are responsible for the bounty projects you choose, if they fail it's never bounty managers fault. Always remember this.
By definition a bounty manager's main responsibility is the bounty hunters and how these people work to promote and advertise the project so in some respect I agree that bounty managers are there to mainly fight for the bounty hunters to ensure that their efforts are being paid for.
I do however disagree that they're completely not related to the success of the project. Instead, I think there's a fine thread, where in some cases the manager can be held responsible if the bounty hunters haven't done a proper job as a direct close supervision failure from the manager itself. The level of responsibility though is and should be set clearly prior to committing to the role - but overall I think there's room of liability for 'some' managers