any insights or particular reason why the regular p2p is more than pop & both of them are p2p ?
NastyPoP is a ckpool front end running on top of the core P2Pool. It proxies all PoP miners as one address to P2Pool, and then it keeps track of shares and pays out weekly. It aims to be a more even distribution method to smooth out the variance spikes as well as make sure smaller miners receive proper payouts when they may otherwise not land a share in the current block payout.
Over a long term the numbers should converge and in reality the expectation is that PoP should come out ahead in the long run.
When the normal P2Pool has a good week it ends up higher, when its luck is down PoP ends up higher. The long term numbers from Johnny however, I don't know why it's still a little off.