Yes Peter could do it, but Peter hardly knows how to use his teleportation/time-travel abilities, Hiro is so much more in control of his powers, Hiro is becoming more in control of his powers by the day, while Peter cant seem to focus on just one power. Peter seems to use his variety of powers on instinct, while Hiro uses his on command. Peters not a *****e and the writers arent stupid, you act as if Peter has had all these powers for years, but really he hasnt even had them for a full year yet. First Peter doesnt even know what he can do, then when he figures out what he can do, he's not in control, then before you know it KA-BOOM, then he eventually gets his mind-wiped. Peter is nothing like Superman, Superman knows exactly what he can do how how well he can do it, with decades of experience. Peter is nowhere near close to gaining full control and because of that Hiro could potentially beat Peter, then talk some sense into him. I do believe Peter will gain full control and become the unbeatable HERO, but I'm guessing it wont happen until the end of the second to last season, so if HEROES goes for lets say 6 seasons, then it will happen in the end of season 5 and season 6.