And yet the Inspired Scriptures are not in Aramaic.
John1:42
And he brought him to Jesus. And when Jesus beheld him, he said, Thou art Simon the son of Jona: thou shalt be called Cephas, which is by interpretation, A stone.
What more do we need? some one is writing down what Jesus said and it is plain that is what they thought it meant at the time it was wrote down.
Jesus predicted that Simon would be called a stone.
The name was translated to Peter long after that, what it means in Latin or English like you say may be interesting but has nothing to do with it.
Mathew 16
18 And I say also unto thee, That thou art Peter,( Cephas ) and upon this rock I will build my church; and the gates of hell shall not prevail against it.
Jesus did not appoint Simon to lead the apostles, he just knew that he would after he received the holy spirit.
Mathew 23 tells us that none of the Apostles would have authority over the others.
Also it is very likely that James ( the so called brother of the Lord who was not an Apostle was the Bishop at the Church in Jerusalem.
It tells us nothing of any of the Apostles being leaders of any particular Church.
I have no problem disbelieving the Catholic doctrine of Peter being Pope with out trying to take away what the Bible has to say.