We know that the Bible contains only retellings of Christ's words. I agree that the line which says "nobody goes to the Father but through Me" seems clear enough. But there are also lines in the Bible that contradicts this one, so let me ask you this, from your understanding of Christ and the Bible as a whole, do you believe Christ, if he is truly just and merciful, would abandon a pious Buddhist who devoted his whole life to God's service? And what about all the people before Christ? Where shall they receive their salvation?
This discussion about Christ's nature is most likely going to be fruitless if we limit the discussion within the Bible. There have been three wide known prophets who claimed to be God themselves: Christ, Muhammad, and the Buddha. Is it a coincidence that they each founded one of the three major religions today?
I believe that they are indeed greater than all other prophets before or after them. Should they be called God as their followers have done? I think they should be. Their words concerning God and His religion are final in each of their own religions. They can change the laws set by previous prophets and they have added new laws and brought new scriptures and all three prophesized their own return. Coincidence again?