I believe it is just your level experience that can make you choose which one that pays you out of these two. The reason why A Newbie like me tries to join Bounty that is better rewarding where I feel I can use this well rewarded coins to invest later. I have come across one Bounty that is well good to join since it is A very true one to me. You may see this link and see what I mean: https://bitcointalk.org/index.php?topic=4625175.msg41773542#msg41773542