As to p2p mining, Antpool collects all subscribed miners to its servers, and then contributes to the already exist p2p network (p2pool.info).
Then why is p2pool currently only ~4.2PH?
Nice one a million question

Any way BITMAIN is ACTIVLEY refusing to publish and fix his software issues and now he begun to fix p2pool and bulshit people. I am telling it again 0% fee comes along with 0% brain......Small miner will stay small miner. end of story..
Engineers are busy, prioritising bug fixes over preparing code for github. Will be up within a few days hopefully.