"Scholarly research has determined that Jesus was historical"
Too bad no contemporary historians at the time bothered to write about the supposed Jesus, I guess they weren't "scholarly".
This is so very indicative of a lack of understanding of ancient historical sources. First, Josephus does mention Jesus. Second, many important figures have been left out of the history books either almost completely or by contemporary sources.
For example, John the Baptist is mentioned by Josephus, but he is not mentioned by Philo, Paul, or in Rabbinic writings.
Paul is attested to by his own letters, and his mission extended much farther than Jesus', but he is not mention outside of any christian sources.
The first biography of Pythagoras, the founder of a whole school of greek thought, wasn't written almost a thousand years after his life.
And so on.
With Jesus, we have letters attesting to his existence by someone who knew his followers, we have four "lives" (ancient biographies) between 30-70 years of his mission, a number of other epistles, an altered reference by Josephus, an unaltered passing reference by Josephus, a possible reference by Thallus, etc.
That is more than all but a handful of ancient figures, most of whom were emperors or members of highly elite and literate communities, not preachers from the backwaters of galilee.