We know that Jesus was a master orator and wordsmith in the tradition (!!!) of rabbis. I think that, in light of many of Christ's teachings and parables being on several levels, Peter was nicknamed small rock in comparison to Jesus being big rock. IOW, Peter is small to Jesus, but is to act in the role of leader when the big and authentic leader has departed (the keys, the keys).
I think that many times people miss all the levels of meaning that Jesus taught to us and the various combinations of copying and translations have taken away some of those meanings or lessened their understandability.
Don't make too big an issue of the keys. :-) Peter was given no authority or priviledges greater than any other Apostle.
You mean his "Pebbliness"? :)
Whether "Rock", "Pebble", or whatever, I agree with the Catechism in that Peter could be considered as the Rock of the Church as opposed to the mistaken belief of so many Catholics that he was the Rock on which the Church was built.
Very good.
Don't make too big an issue of the keys. :-) Peter was given no authority or priviledges greater than any other Apostle.
The whole 'feed my sheep' deal was given directly to Peter, as well.