“Peter had no ‘power’ but the spiritual gifts of the apostle.”
The disciples did not at that point in time, have the gifts of the Holy spirit, which did not come until Pentecost.
This is different.
Christ explicitly states, “I give you the keys to the kingdom of heaven”. He says this to Peter only, not the other Apostles, and he singles out Peter after Peter’s affirmation that Jesus is the Christ.
The keys to the kingdom of heaven is salvation by faith.
He gave them to all of mankind, but most deferred.