You would definitely earn more on bounty because you can get a huge reward compare to airdrop but why not take advantage of participating them both. You can get more rewards if you do participate both. But sadly most of my experiences in airdrops were not good because most airdrops coins I received are worthless.
exactly.. you don't need to spend too much time on airdrops so there's no downside in participating in them. From the scams that have been reported by bounties, I really don't want to waste my efforts and end up not getting paid.