differences are peter has taken years of training in many different martial arts, he has all the abilities he aquired (combining both current and alternate future abilties) he has Ion powers
So basically abilities of Peter Petrelli:
Precognitive Dreams
Precognitive Paintings
Flight
Space-Time Manipulation
Cellular Regeneration
Telepathy
Invisibility
Radiation Manipulation
Super Strength
Electric Manipulation
Phasing
Super Speed
Pyrokinesis
Ion Abilities
I must have been out of touch with heroes for quite a bit when did he get all those powers?
Well since peter is based on someone like us (who would use the powers well) He wins, Stops time, creates k-night radiation, phase supes heart out of his body, and whatever else he wants to do.
I dunno is he freezes time (I dunno how long prime would stay frozen since IM pretty ssure he can break the time barrier) but phasing the brain out could work I think