hi!

i don't think the the two should be compared. an air drop is ment to promote-  you can keep it and see where the coin is headed later on. in a bounty you are the promoter in exchange for coins. you should have a belief in the idea that project stand upon (at least in my view) and you complete various tasks to help the project.

here is a nice project for you guys to check out  - https://bitcointalk.org/index.php?topic=3043422.new#new

they called Liberdy and i just signed up for it it looks good.