dude if Santa Claus is real Jesus would be real.
Saint Nicholas was definitively real.
Now, it depends on whether you believe sainthood is some kind of divine bestowment or something awarded by a church run and managed by mortal and flawed men. But there you go.
Nicholas of Myra and Jesus of Nazareth were both real men. Divine bestowment of either one by power-hungry, revenue-based organizations is what's up for debate