Ask for audited real trades, profit factor, average win/loss and max drawdown over a period of years. If they can't give you this data or its only over a short time frame or they will give you everything but audited real trades, then chances are its a load of bull excrement.
I asked for copies of these but was told they were not available.
https://www.aussiestockforums.com/forums/showthread.php?t=15895&p=633453#post633453