It is not normal for tests done by different people to give different results. Beyond the spread and slippage, the results should be the same. From my tests on the free account at FTMO, the best performers are EURAUD, USDCHF, XAUUSD. I don’t understand how you did the tests, but for me EURUSD has the worst performance among all 8.
I suggest you write in English. Here are people from all over the globe and they would all understand more easily.