Buddha never claimed to be God. Moses never claimed to be Jehovah. Mohammed never claimed to be Allah. Yet Jesus Christ claimed to be the true and living God. Buddha simply said, "I am a teacher in search of the truth." Jesus said, "I am the Truth." Confucius said, "I never claimed to be holy." Jesus said, "Who convicts me of sin?" Mohammed said, "Unless God throws his cloak of mercy over me, I have no hope." Jesus said, "Unless you believe in me, you will die in your sins."
And again in John 18:37 "You are a king, then!" said Pilate. Jesus answered, "You are right in saying I am a king. In fact, for this reason I was born, and for this I came into the world, to testify to the truth. Everyone on the side of truth listens to me."
And again in John 8:47 "He who belongs to God hears what God says. The reason you do not hear is that you do not belong to God."
And here's a comparison between Jesus and Muhammad:
http://carm.org/religious-movements/islam/comparison-between-jesus-and-muhammad