DislikedOne important thing: the results are not so impressive if the test is run on a 3y period ... only the last year give good results.Ignored
No EA trades the same over long stretches of time. An EA uses indicators that are simple algebraic formulas with one constant (sometimes more than one). That one constant is optimized for a particular period of time -- e.g. the last 4 months. Since market conditions change, that one constant should also be "refreshed" by re-optimizing the settings (i.e. the indicator constants) from time-to-time.
There is no effort without error or shortcomings (T.R.)