trading is way much better than gambling. it is like trading is earning while gambling is wasting mostof the time. and there is no comparison between trading and bitcoins because what you are trading is the crypto currencies itself such as bitcoins, altcoins and other coins.
trading will be much better if you know what you are doing inside the exchange, but if not its just a same risk as you are both betting with the outcome results, gambling is much quicker in terms of getting the results while trading sometimes needed time and patience before you can gain or lose your
investment.