Well, even if you have volatility you still need to be on the right side of the trade more often than on the wrong side or let me phrase that differently, you need to win more on your winning trades than you lose on your losing trades and have a certain winning percentage.
Just because an algorithm works in one month doesn't mean that it works all the time, sometimes the markets change just a bit how it gets traded and something that worked might not work anymore and vice versa.
That said I'm aware that these guys seem to use a strategy with arbitrage or spreads or such stuff and they might dont even need this much vola but thats not the point. The point is that people need to see a certain track record which is way longer than a few months, you can trust me on this or not. It's your choice.
But you can take one thing to the bank. In trading you can never, never ever take a performance from the past as granted for the future, no matter how and what you trade.
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