What would you call the Catholic church then... an organization?...an enterprise?
Jesus said "And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it". The church of Jesus is His bride...the body of believers, and has nothing to do with the name on a building.
If Jesus meant that Peter was going to be the head of a 'church', then its too bad neither Peter nor the apostles understood that.
Cruciform.... As said previously in this thread; you seem to have no understanding of what science is, and a poor, or perverted understanding of scripture. Your "preferred theological interpretations' do not align with scripture.
Lets look at the 2 verses you mention and see if it says the Catholic church possess' "all truth".
John 16:13 Douay Rheims "But when he, the Spirit of truth, is come, he will teach you all truth. For he shall not speak of himself; but what things soever he shall hear, he shall speak; and the things that are to come, he shall shew you."
John 14:26 Douay Rheims "But the Paraclete, the Holy Ghost, whom the Father will send in my name, he will teach you all things, and bring all things to your mind, whatsoever I shall have said to you."
Hmmmmm..... So the Holy Spirit will teach us all things, and teach all truth. Those verses say nothing about truth belonging to the Catholic church. But, we do see evidence of people within the Catholic church who are part of Christ's church (and lead by the Holy Spirit). We also see evidence of the Catholic church itself, ignoring truth and pushing false secular and sometimes heretical beliefs.