[pinkpanther]

Point 1.
The story of Prophet John being asked that question is found in John 1. He was asked if he was one of the 3 personalities.
1. Elijah
2. The Messiah
3. The Prophet
Prophet John denied being all 3. The point is, that the Messiah and the Prophet are 2 different personalities.

Point 2.
Peter said in Acts that Jesus must remain in heaven until the promise of the incoming Prophet is fulfilled. 

Point 3. 
The warning in Deut 18:20 is serious. We all must listen to God's own words that God puts into the mouth of this prophet. If you say this prophet is Jesus, then we all can take it easy because we do not have God's words that he puts into the mouth of Prophet Jesus. The serious warning in Deut 18 is not so serious after all.

Point 4.
Tell me how is Prophet Jesus like Prophet Moses? You believe Prophet Jesus is 100% God. Was Prophet Moses 100% God too?

Point 4...Jesus fulfills the role of prophet in that he alone is the ultimate teacher, who has the words of eternal life...

But Jesus is unique in the role of prophet because he doesn't just communicate God's will. Jesus is the very Word of God, and God's ultimate revelation of Himself...