That’s what Forex Brilliance developers think too and they have created a suit of expert advisors that trade on explicit major pairs. There’s no confusion as to what to trade it on and on which currency pair it should work better. I think more developers should use this practice.

Not only that, when you’re trading manually, you should consider that for your manual system as well . It is a mere matter of chance, once you test and tweak a system on one pair, it’s likely to perform better on it. Naturally, I do not say that there are no systems that are universal, but it’s’s lots more difficult to make and run such a system.