The three measures: Win Rate, W/L Ratio and Profit Factor can be related to each other using a formula (see: http://www.priceactionlab.com/Blog/2...d-payoff-ratio). WinRate is not necessarily secondary to W/L Ratio from the strict point-of-view of total profit generation, tho I agree with you that it's harder to follow a system with a low Win Rate.
Trader D