Claudius was an emperor for 13 years. The evidence of St Peter disputing with Magus is in the Acts, both canonical and apocryphal. This doesn't make him the same person: it is kind of difficult to have a public disputation with oneself. In fact, it proves Peter being a different person, meeting Magus in the same time frame as Peter is beleived to be in Rome.
Apostle Peter was not a Samaritan.
Marcionites were indeed Christian heretics. It is possible that somehow the followers of Magus were mixed up with them, even more so that the teachings of Magus look like a mockery of the Christian beliefs.
I think, however, that we have solid evidence that you and Jack Chick are the same person.
Is there anything in Chapter XXVI of Justin Martyr's First Apology that might be construed as evidence of a 25 year Roman Bishopric for Simon Magus whose followers were called Christians? Yes or No ----