Name the historians. Things like that don't happen in reality, for instance, people who are actually dead don't come back to life again.
Most historians believe that most of the epistles are genuine. That's as far as it goes.
Paul claims that many people have seen the risen Christ, and that finally the risen Christ appeared to him. Peter is one of the latter, but since Paul appears to have disagreed with Peter on a number of significant details, one should take such testimonies with a pinch of salt.
In any case, Paul really is not at all concerned with the historical Jesus, only in what he considers his death and resurrection signify.
So we come back to the original not very illuminating claim - most historians consider most of the epistles genuine. Doesn't get us very far.