You can't prove anything here because if someone calls to God then there must be a link there. Like when a car salesman calls you to sell you a car. He must know more about the car to sell you it.
Therefore the Prophet Muhammad (peace and blessings of God be upon him) knew God better because he was a prophet and his job was to call people to God. So this establishes a link.
I have got to say most of what you say is held together with wet paper.
I have to admit that I laughed out loud when you gave me "proofs" which are not really anything.
There is one narration that one his wifes was in a room at night and he came in (peace and blessings of God be upon him) and then the whole room was lit up from the glow of his face.
Another incident when a companion looked at his face then looked at the moon then compared them again. then he proclaimed that the face of the messenger of God was brighter than the moon.
In the passage you copied in this removes all false ideals of paganism. That God has left the world - he is the sustainer, that God is one, that he has no offspring, and there is nothing compariable to God.
So this whole passage is about God, how can someone say that this is someone who is not talking about God. When this is clearly about God.
The common things about Muhammad and Moses (peace and blessings on them).
1. They were sheppards
2. Both conveived naturally
3. Both died naturally
4. both recieved prophethood 40 years plus.
And here are the difference between Moses and Jesus (upon them both peace).
1. Jesus conception was a miracle
2. We believe he was taken to heaven and you belief he was crucifed - so unnatural death.
3. Received prophethood at birth.
So as you can see all your points have been disproved.