Still, curious about pictures.
I bet it is a simulation. We all know that simulation is not 100% correct. There is always a marginal error once the strategy is applied in real life. Aside from that error increase or decrease depending on the compatibility of the software setup to the actual sites software set up. If they are different then we can see a huge discrepancy of result. Btw, if he uses a martingale method, eventually his balance will be eaten by consecutive loses.