There is, indeed, one man - Jesus.
By your logic, one could argue that Roman Catholics see Peter as the founder of Roman Catholicism -- is the Pope not heir to the "Throne of Peter?"
Terabitten: There is, indeed, one man - Jesus
Christ did not establish a sect, but His Church, and He left it to the Apostles and their successors to baptize all nations in the name (of each Person) of the Holy Trinity, and to teach them everything He taught. [Mat 28:19]
Christian Church starts with our Lord, Jesus Christ, on the Pentecost, in the year 33 A.D. Islam is established in the 6th century by a man called Mohammad. Protestant church is born 1,000 years later by a man called Luther. I think the difference is glaringly obvious.
By your logic, one could argue that Roman Catholics see Peter as the founder of Roman Catholicism
Nonsense. Saint Peter is not the founder of Roman Catholicism. The Pope is a successor to +Peter's office as the Bishop of Rome. Luther is a successor to no one's office. His church came out of his mind and his movement. He is the founder of Protestantism, just as Mohammad is the founder of Islam.