Not all of them are using demo , there were SP that were also and live traders.I guess the current ones perform better on demo (in terms of physiological stress and all)
the overall performance and profitability of the followers over a long period of time is a major factor that attributes to the ranking . maybe at the moment there are no live accounts performing as well as the current top 5.
the overall performance and profitability of the followers over a long period of time is a major factor that attributes to the ranking . maybe at the moment there are no live accounts performing as well as the current top 5.