There are a lot of evidences; I think most of them by themselves would come up short. But, put them all together, and it creates quite a portrait.
The one that I personally can't get past is believing that hundreds of people would choose persecution, family rejection and many of them death for something they knew to be a lie. Ordinary, common people just don't up and do that, especially in large numbers. You simply can't compare this to people choosing the same for a belief. Totally different.
The notion that all this was made up over decades is discredited by modern scholarship from the bulk of both liberal non-believer & conservative scholars.... as the previous gary habermas clip shows. That is beyond dispute in my opinion. There he detailed the "minimum facts" argument. This is reasoning that only uses facts that most liberal non-believing scholars agree with. These facts place the witnesses at the right place at the right time.
So, skeptics are stuck with the problem of why many, many people:
1. chose persecution,
2. chose to give up their previous religion that had been inculcated into them from birth
3. chose to be shunned by family
4. chose death over recanting
... All this for something they KNOW to be a LIE.
Comparing this to a belief is apples and oranges. Dying for something you believe to be true vs. dying for something you know to be a lie.... are completely different things.
So far, Anders is the only one to offer a couple of relevant possibilities within the framework of accepted scholarship from liberal and conservative consensus:
1. Some people perpetuate a lie to gain power or money.
The general view of the first Christians were that they "shared all things in common" and they were taught to treat others as more important than themselves, and to be a servant rather than a traditional-style leader. So, I think this possibility falls pretty short.
2. Some people believe their own lies.
Again, the issue is not whether or not people believe their own lies or anything else for that matter. The issue to grapple with here is why large numbers of people were willing to suffer and die for something they KNOW to be a lie.