Hello wilczek and hello everyone
I am familiar with that website and I have been following it since it started,
I don't understand why they took this system off, they seem like experienced traders and they should realize that all systems go through periods of inferior performance, in addition they don't seem to follow the system instructions exactly - especially with reentries.
Look, a lot of great fund managers have loosing years not to mention months and they manage hundreds of millions of dollars.
As far as vendor's published performance, on good months, my performance is not as good as his, however during bad months I usually have a better performance. I only trade the London and US session and would take any valid signal an hour before the start of the London session, I also use a larger time-frame RSI based filter which weeds out some of the bad trades especially during sideways market, Think about it, if you are only in half of the trades during loosing sideways market, your draw-dawn will usually be half, in prolonged trends you will always be on the right side of the trade anyway.
This is a basic system which uses hull moving average (high, low, close) with SAR and another momentum based filter, and basic is usually best in the markets, why? because over-optimization leads to failure, when trading you need an all-season system since you never know when seasons change and you don't want to be caught in your shorts in the snowstorm.
Regards