As one is fact and the other is belief. That is the way it is and why Chrisianity is a religion.

The scienfic historical question considered here is not what people believe Jesus was and did but wether he existed at all. The question of wether all the wonders ascribed to him including his ressurection really happened is not within the realms of this debate. And we Christians won't deny that there is no historical evidence for that. It is a matter of belief. That those wonders could only happen if the laws of nature did not work as usual on those occasions is a simple fact. That is what make them wonders.