The answer is Yes and No.
Let me try to explain. There was some wrong information that was spread since the beginning of the CE system, that we are using CP, and so the CP term was adopted and used.
zFTP is calculated using a similar system as the classical CP. But because we have no way of knowing or guaranteeing which values of the curve are maximal, we have to analyse the curve to determine which values are maximal (or close) and adjust things accordingly to calculate the best fit for the regression. Therefore, mathematically zFTP is different than CP.
However the part of the answer that is Yes, zFTP = CP, is because the term was wrongly adopted since the beginning.
So ideally from here on in, it would be best we all call it zFTP (and that is the value that is used for category enforcement) and not CP.
I hope I’ve made things a bit more clear.