Both are based on characters with super human abilities! Many are common between the characters from the two shows. As the show moves on and more is revealed I will update the post. But here are the parallels from the first 7 episodes.
Chapters: 1/2
Fandom: Heroes (TV 2006)
Rating: Teen And Up Audiences
Warnings: No Archive Warnings Apply
Relationships: Peter Petrelli & Elle Bishop, Claire Bennet & Peter Petrelli
Characters: Peter Petrelli, Elle Bishop (Heroes TV 2006), Claire Bennet (Heroes TV 2006), Bob Bishop
Additional Tags: Peter and Claire are twins, The Company - Freeform, Implication of torture, Background Sylar | Gabriel Gray, Episode: s01e09 Homecoming (Heroes TV 2006)
Summary:
Elle let slip that Claire and him were twins.
She'd managed to connect the dots that the same instance that put Peter in her father's care put Claire in Noah Bennett's care. Neither of them were supposed to know; their father didn't trust her, but he did trust her general naïvety and gave her certain crucial facts that were enough that she figured it out a few months into the assignment; Bob definitely didn't trust Peter either, but for entirely different reasons.
He didn't get why they were being sent to watch Claire, anyway, if Noah Bennett was half as good and loyal as he was said to be.
OR: I had a dream 3 years ago that Peter & Claire were twins, but Peter was given to Bob Bishop.