Reputable managers who are higher ranks such as yahoo, Hhampuz, etc. adds credibility to the project since they make sure that bpunty hunters are paid out accordingly and that they are not helping out scam projects on promoting. But we cannot remove the fact that new projects choose to handle their own bounty program to save funds and it doesn't always mean that they are not legitimate.
True, I believe that's why many are promoting JACS bounty on this forum, I can see that the bounty manager is Hhampuz, I checked out the project but I wasn't that impressed untill I noticed it's from Hhampuz, I guess that's why many joined, the signature campaign spreadsheet consists of over 300 bounty hunters, Credibility speaks louder I guess