That's a different betting option. Here users won't get to be lucky to win big in a short as the price is completely unpredictable. No one makes a continued research about the cryptocurrencies price moves. These were almost similar to the sports betting, people get lucky enough to get a winning in unexpected time.
There are some moves that can really make some pretty good bet when it comes to betting on cryptocurrency prices. It does not have to do anyway with only Bitcoin and you can still do your analysis to predict where the trend may end up falling. However, it is still a very risky thing to do, but that is why it is called gambling. Everything comes with a risk and it is just to understand and accept the risk that matters.