Saying specifically that trading or investment is than than each other seems not ok by me but one can always go for what he is really good at or having interest for, if you invest, it requires monitoring so you don't waste your precious money, this is when much time to study the trends is required such as when to withdraw or when to hodl.

While in trading, you sell what you wish, how you wish and when you wish to, but never forget that the current prize also determine the rate you offer for your trading but i can assure you the two are interesting provided you know how to go about it.