OK lets come up with a complete list of powers Peter has.
Including, ones he's well aware of, ones he knows about but not really skilled in them yet, ones he only vaguely even knows he has and ones he has no idea about.
Perhaps even some he may have that even we aren't aware of?
OK so we know he's got and is becoming very skilled with,
Flying
Invisibility
Healing, if you can really be skilled at that. lol
Telekinesis
Electricity
Any more you'd consider hims already pretty good with?
Alright then how about the ones he's just started getting control over?
Intangibility
Telepathy
Radiation
Future painting
Which ones would you say he has an idea about having?
Space Time Teleportation
Clairvoyant Visions
Dream Travel, for lack of a better word.
Super strenght
Now what do you think he doesn't even know he has?
If he even has them!
Alchemy
Technopathy
Finding People
Healing Others, His parents were close to Linderman, its very conceivable to think he'd met him at some point in his life!
Mental Manipulation, The Haitian's ability
and there's the other abilities of Sylar's which I don't think he's replicated.
i am afraid that in the future they willl kill peter or maybe depower him saying he has absorbed too many powers , and use the example of if a sponge absorbed too much water it can't hold it all in !
they could have a bad guy sponge who teams up with Sylar
but they'll have a Megatron-Starscream relationship where they don't trust each other and are only cooperating because they're evenly matched(and are both evil)
well an evil sponge wouldt be evenly matched. he'd overpower sylar as soon as he met him. duh. he'd have sylars original power which would give him control over sylars already stolen powers, which equals sylar dying. but an evil sponge would be tight, i seriously hope sylar remains the main baddie
Peter possibly has all of Sylar's powers, but as Sylar hasn't demonstrating much of them in front of Peter, he likely doesn't know he has them. I like it better that way...
As for mental manipulation (the Haitian's ability), I don't think it is possible for him to absorb it as his power shuts down when the Haitian is around and couldn't absorb or access anything...