I'm not sure about it but if bounty campaign has a good ICO project behind so whom is manager is not important. We just need to care about project behind bounty so if it's a good project so its bounty is also good as well. But sometime it's not the same like what I said for example, Envion is a good ICO project but it has a scam bounty campaign and until now, there are no participant received token for their works on Envion bounty campaign