The two can't be compared if you have a different view about mining and holding. If you're for the profit then for sure you'll be choosing the one that can generate you much profit no matter how much the capital is needed. Mining isn't just all about profit, there's expenses, maintenance while holding, you really do hold it and do nothing except adding more and selling.
.
Of course, it is difficult to distinguish between these 2 things, trading can be done by anyone even with a capital of only $100, while mining requires at least $ 5k. In 2016 I used to mine with 2 units of Antminer S5 and the results were bad because the electricity cost was large and the price at that time was still under $1000, with the current price mining is very profitable.