The Pope is Bishop of Rome, so he replace the first Bishop or Rome, Saint Peter (Bishop of Rome in 60 after the birth of the Christ).
So the Pope is chosen to replace a very wise man. He have to be a very wise man himself.
For protestants, maybe the most important in religion is how you have to live.
For catholics, maybe all the historical facts have more importance and have to be known.
By the way, Catholics see Protestants as a minority
Nota :
"peter" (petrus) means "rock" in latin
Saint Peter was a fisherman when he met Jesus ; his name was "Simon" at this time (not Peter).
After he became the companion of Jesus, the Christ told him : "Now your name is Peter ("rock"), on you I will build my church"
Nota : I have to improve my english, so if you see something to correct in my sentences, I kindly thank you if you correct them