cant speak for anyone else here punter57, but i doubt many would be using their pot calcs to determine their next bet(s), & if they are then this would simply be part of a staking plan of some sort, would it not.

as kenny put it - "Profit on turnover has to be the most accurate measure of whether we have made money or not and if so at what rate we have made it."

i do not view my pot calc's as any sort of "crystal ball" which somehow guarantees me a profit next week/month/year. simply they are a guide to let me know how i am performing at present, & therefore i am able to compare my present performance to my past efforts, & i would suggest that this type of analysis is essential for anyone serious about making a quid, no matter the endeavour.