EA performing very differently

 

Hi,

I'm developing my first proper EA with order management etc.

How is it, that the EA is performing so differently on different currency pairs?

E.g. on EURUSD, I can back test it for a year and have profit factor of 1.34 and 70% of winning trades and a maximal drawdown of 513 (in an account of 10k), thus making a good profit (of course there's still a lot to change and test, especially the losing trades)

But on EURGBP it has a profit factor of 0.6, losing a lot of money.

Do/should profitable EAs work equally well on all currencies or is my scenario above normal?