Hello Thyago,
I am currently using Jfd and pepperstone, and at the beginning I saw that the demo was matching with the live? I have not done the test recently, but it is easy to switch the data feed from one resource to the other.
All you need to do is to do is to export the data from the live server and the Demo server, and compare them in EA Studio.
Also, make sure to test it for same periods.