No matter how much I hate Wikipedia, Tenebrous's video on "Historical Jesus" made me Google. Just as how easily Wikipedia explains it makes it the first thing I clicked.
https://en.wikipedia.org/wiki/Historical_Jesus
Also, not just about Jesus. With Jesus being an actual human being, you can prove it quite easily with very detailed evidence. You can't prove God being nonexistent because you just don't believe so.
It doesn't take a brain to realize Scientology is fantasy.
http://kizaz.com/2013/05/26/top-10-unbelievable-scientology-facts/ #8. Hydrogen bombs didn't exist 75 million years ago and there are no records of aliens at that time. Obviously humans didn't exist.
There is a difference in each quantity of evidence.