Interesting post. I notice there is no mention of the keys. What is the Orthodox position on this?
Same as St Paul's. He wrote to the Ephesians that the foundation is "the apostles (plural) and prophets; Jesus Christ being the chief cornerstone."
Keys and loosing and binding are entrusted to the Apostles and all their successors; not just to St Peter.
If interested, here is a link to an Orthodox understanding of St Peter's primacy.