I don't think these are the same thing. But when someone says that polio type 2 has been eradicated, that means the entire family of WPV, cVDPV, and VAPP. Not just WPV.
For all intents and purposes, yes, cVDPV is the same thing as WPV. There have actually been instances where cVDPVs have evolved into things that look quite a bit like WPV. Declaring victory over "type 2/3" because WPV is gone is meaningless when lots of people still get cVDPV and have exactly the same symptoms.