System price quotes Vs Simulated account

During testing of my stock system I noticed that the quotes on the simulated auto trading account were much better 100% of the time than the ones posted on the system main screen/stats. Like It would say ($10) lost on the system stats but my auto trade performance would say $15 gain. It was a very noticeable difference but not always, specially when only investing a small amount. I think it was a difference of almost 1% gain between the two.



It would be unfair if the stats say 1% loss if the potential actual performance was 1% gain.



This is obviously good for the subscribers, but not for the system stats. It’s not like the simulated accounts is doing real fills, so why the discrepancy between the two?



Any insight on this would be great.



Thanks,



Julio