All you have to do is to calculate the potential reward ratio
to potential loss, by dividing your net profit ( that's the reward) by the price of your most important risk taken.
This method is applicable to any business weather online or offline, bitcoin or cash, your reward is determined by risk taken
This your statistics us too simple and complicated to understand because a good clarity is not given, I know business is determined by profit over loss, risks over efforts applied and then rewards comes after all you put in.
Is understandable trying show us how to calculate our losses over profit but in this case the forum is not directly a mining site but Bitcoin discussion.