Well did you ever think about these people killed themselves for their beliefs which could very well be wrong (in fact I know they are)?
But how do you know that they are in fact wrong? You are aware that there are adherents of other religions that would say that you are wrong, and that they "know" that they are right. It's just like you "know" that you are right.
Say what you will but no one has ever disproven the validity of scripture. And then there is much more evidence but you have to be truly seeking God I guess before you can find him.
But do I have to have a sincere belief to find God, or can I find God just to determine whether there really is a God and which specific God that is?
And what type of evidence will I look at? Anecdotal? Mathematical? Because it sure isn't scientific.
Here's another list incase you missed it the first time "Non Christian Resources for the Evidence of Jesus"http://www.garyhabermas.com/books/historicaljesus/historicaljesus.htm#ch9
Actually the section that you specifically link to does not have any citations at this time.
But from what I've read the author hasn't actually mentioned anyone who was a contemporary of Jesus.
However, even if you can show that Jesus existed, it still does not show conclusively that Jesus was the son of God.