It seems to me that trading is less risky. At the moment I can draw some conclusions. Trading brought me more profit than participation in bounty campaigns. Perhaps the situation will change in the near future.
Comparison between bounty and trading is not comparable because on one side of trading we need capital and more profit in bounty we do not need big capital to be able to follow it but indeed the risk is also quite large not getting payment
Yes it's not exactly apple-to-apple compare bounty with trading because trading need capital and for bounty all you need is time. My personal opinion, do both if you have enough time but if you already good enough at trading, bounty will bring you less profit than trading.