Very Large Difference Between Results For Same Signal and Pair Among Different Broker

[dhm4x]

I have worked with many demo accounts with many brokers, all using automated signals, and I was about to open a live account with FXDD Auto, when I noticed the issues described below.

I believe all of the brokers listed below are using Tradency. I am interested in WealthBuildersFX-Striker, EURUSD. HOWEVER, when I look up performance via each of the 5 broker's "Performance" link in the user interface of the demo account, FXDD had very positive results, but all 4 of the others had exactly the same negative results, and the difference is extremely large:

1) FXDD auto: 12-month= +3,058 pips, maxdd= -647, 106 trades, $30,406 profit
2) FX-Auto: 12 month= -183 pips, maxdd= -2,317, 86 trades, $2,522 loss
3) FXCM-Auto: 12 month= -183 pips, maxdd= -2,317, 86 trades, $2,522 loss
4) ProSignal-Auto: 12 month= -183 pips, maxdd= -2,317, 86 trades, $2,522 loss
5) WealthbuildersFX 12 month= -183 pips, maxdd= -2,317, 86 trades, $2,522 loss.

I see the same problem when I look at last 6 months and last 3 months. SO, if the signal provider is the same, WHY ARE THE RESULTS SO DIFFERENT? Since all of the other brokers numbers were identical, it makes me wonder if the numbers from FXDD are accurate?

Also, it is very interesting that the average cost per pip must have been so much higher at the other 4 brokers compared to FXDD's more normal amount: $2,522/183=$13.78 compared to $30,406/3058=$9.94 (which is close to the $10 per pip normal rate). Any ideas about this large cost per pip difference? Or did I make any errors in my analysis?

Thanks!