Okay...so the 616 Apocalypse is off with the celestials. Taken to pay his dues for the use of their tech.
It has been written in as part of his character by the writers over the years to explain his up and down power level that he needs a host body that won't burn out. That using his powers speeds up his need for a new host.
Meaning that he has to be a schemer and powering people up from behind the scenes. Because you know that pesky wearing out the body thing(not a problem with weapon omega/wolverine in the AOA comic).
Pocy's powers..like rolling vision bishop mister fantastic(not counting the smarts), atlas(I say atlas cause normal sized he is stronger then human) into on character. He has telepathy shielding and telekinesis. Oh and allot of combat experience.
I would put him power/threat wise with loki, Sin(during fear itself) Doom(without his power ups, time to plan or and army of doombots)
This is a guy who if he has to fight can take on teams by himself(note I said take on...not beat).
He is not a push over.
But here is the think his goal is to push survival of the fittest...if he has to take over to do it he will but most of the time I think with all the superpeople beating the crap out of each other he would sit back and laugh.
But well he wasn't doing his job so he got abducted by the celestials.