Here's my take on this...
It's easy now to say that these things happened, like a virgin birth or rising from the dead, (or could have happened many times)... because it's 2000 years later. We know that many people rose from the dead because the Bible tells us that Jesus gave many people back their lives. Jesus had many signs and wonders, so much that Josephus, a Jewish scholar, called him a sorcerer.
However, many people claim things about Buddha now that cannot be proven. Many people call key figures in their religions gods or prophets of God, whether they are or not.
Here's some bit of proof on Jesus: The words He spoke, the miracles He performed, what He did--- was written about in the LIFETIME of eyewitnesses. Someone who was with the multitudes for the loaves and fishes miracle could say that Jesus did not feed everyone. Those who were standing around when Jesus said that He had never sinned could have spoken up and said, He never said that.
The New Testament was written by people who knew Jesus personally, or by people who knew the people (Luke wrote the books of Luke and Acts so that a friend of his, Theophilis or something like that, could know what he believed.) Check out the dates for when the books were written... some people believe that they were as early as within 20 years after Jesus died. Definitely some were written within 45 years. Eyewitnesses were still alive.
There are thousands of manuscripts of the New Testament. There are only a few of other things in history, but they are not discounted as being false. Even the Dead Sea Scrolls verify Isaiah 53, which is a prophecy about Jesus--- there is only one real difference from what we have today, which is the addition of one word, which doesn't change the meaning of the Scripture at all.
There is so much more that could be said, I did a bible study on this, the validation of Scripture... we do need to know what and why we believe... why we can trust the Bible to be God's word. Even if we never doubt it, someone may come to us who does, and we should be able to answer their questions.
"Always be prepared to give an answer to everyone who asks you to give the reason for the hope that you have. But do this with gentleness and respect" 1 Peter 3:15
I do caution you to be wary of seeking answers from a source that claims it has 'new evidence'. There is nothing new under the sun. God has been revealed to us in Christ Jesus, God is not hidden. Jesus cautioned that the enemy would try to deceive us. Be on your guard with the Armor of God; Ephesians 6.
God bless