You seem to say First comes the Catholic church, then comes the historical Christian events, as if the Catholic Church alone determines authenticity. Or maybe I misunderstand. At any rate, let's leave the poor Mormons to their error for now, and look to Christian "experiences". When not grounded in the Word, and the Word alone, Catholics become prone to mysticism and Protestants to charismatism, if that's a word.
No, first comes the event, what we call the Paschal Mystery. With the coming of the Holy Spirit on Pentacost, the Church is born. It is her witness to Christ that defines the "experience" - the "folly of the cross" as Paul says. It is the Christian explanation that defines what the Old Testament prophesies mean. These experiences of the Christian are based on a real event - the Risen Christ.
When not grounded in the Word, and the Word alone, Catholics become prone to mysticism and Protestants to charismatism, if that's a word.
When you capitalize "the Word", I presume you mean the Bible - correct me if I am wrong... In reality, the Word is the Second Person of the Trinity. Our religion is based upon His revelation to man, not the Bible alone.
Regards