Trading is better if you want to earn money faster, mining is more like a job and ROI can be doubled depending on the difficulty.
but as you know day trading is quite risky. People with more money in hands can move the market despite the trends.
I think that both have their merits and demerits, I think that mining is a regular source of income, but the electricity price really make it difficult for the miners to mine bitcoin and get some good profit from there. While in trading if you do not have enough experience then the risk of losing your own money is too much.