Hah, you say that NVC already implemented PoS. PPC implemented PoS first. NVC has a bad rep. I wouldn't be suprised if the NVC market collapses soon.
Considering PPC will, eventually, only be profitable for ASICs... Not gonna hold my breath.
That's the whole point of PPC to be energy efficient. With bitcoin the same electricity would eventually be spent when ASICs were launched. With PPC less electricity will be used because of the block reward algorithm.
But you only generate PoS if you hold on to it, which is not the mentality of ASIC miners, and most people out to make a buck. So the whole "energy efficiency" part goes out the window.