See my answer to tortoise above. Briefly if is not Christianity that needs to disprove evolution, it is evolution that needs to disprove Christianity for evolution to be true.
That's actually a more rational position that the atheistic accident which some are striving to have be our mythological explanation for the existence of the universe.
Why would it automatically mean that the God of the Bible is the one who is real?
We have to make a choice as to who or what to worship. That's what free will is all about. Our culture and nation is based on treating the God of the Bible and Jesus' teachings as an axiom. It works pretty well. Cultures that reject the God of the Bible are superstitious hells on earth.
How can you really know what's for certain? That's what the Gospels are all about. That's what Jesus Christ's sacrifice is all about.
But again, it is your choice to accept or reject.