Judging performance of an EA system that offers multiple pairs/EA that are constantly optimised is virtually impossible. However, if that system is designed for prop challenges, and if one two or more EAs do hit SL 3-4 times in a row, that can be a liability, as unfortunately these challenges all have limitations. Which if taken under consideration, then certain adjustments need to be done both on traders end but maybe also on developers end to try and offer as much protection as possible. In my opinion, if your EAs are losing 1-3 consecutive trades, then you should close the positions manually if the next trade is also going the wrong way for you. Or tighten spread limits and/or amount of trades to take within a day. My selection is not the top performers blindly, it’s max 3 EA pairs, and all of them have to be with less than 5% DD and the balance-equity graph has to be as smooth as possible and the equity never drop or rarely drop significantly below the balance line. Further to that, I alaways half the proposed lots and have all selected pairs with 30 points max spread and only one trade per pair per day, and just add 3-5 minutes before and after high impact news. Don’t touch anything else on the settings not even trade time, I leave it as is. If despite all that the system is still pushing my accounts too strain, then I stop trading altogether. And if i try again and still face issues well maybe I need to change the system. Probabilistic and statistical approach for me at least doesn’t offer much input tbh, as the price will either go up or down. For me the success is best possible entries on best possible TF and best possible account protections. I am still going to lose trades but having that in place would most likely mean I will lose smaller and win bigger. To allow me to increase the lots gradually and pass the challenge.