Good point here Andi!
It is really a common mistake that traders trade one and the same strategy, with the same parameters on different currency pairs.
Simply, if you run a back test on one and the same strategy on different pairs, you will see that it shows different results. And most of the time it will work with the pair that we used in the generation of the strategies, and the other currency pairs will show losses even. That is where the Multi Markets tool come very useful.