I'd like to comment on your question until Mr J arrives.
You'ld think,at first glance,that your edge is the POT of 15%.
If you were playing an even money game then that would be true.But you are taking various prices about your selections.
Supposing you tested at 1000 events,then at level stakes you would have invested $1000 but not necessarily got back $1150.
Only if you were betting level stakes in your declared POT would it be true.