You are so imprisoned within the darkness of Roman Catholicism with its religious fetters that you are unable to understand the Gospel with its religious freedom.
If you do go through these threads you will discover that all who are true Christians, whatever their denomination or allegiance, believe in One God Who is triune, and one Lord Jesus Christ who is truly God and truly man. You will discover that all look to the cross for their salvation and to the resurrection for their new life in Him. They all abhor the Roman Catholic teaching on Mary and the pope. They are all one on these things. Thus your statement is a lie.
In lesser, less important things, God is educating each one of us up from where we are by turning us to His word. It speaks by the Spirit to each one of us in different ways. Just as a child makes mistakes so do we. But the Holy Spirit is bringing each one of us closer to God. Because of our preconditioning we come from different directions, but all are heading in the same direction in the freedom of the Spirit. Instead of being bogged down in dogma, we are free to express what God has revealed through our lives. It binds us together in the unity of faith, and the freedom of the child of God.
But the difference from you is that what we are responding to is from the heart, not according to a legal code or a bunch of tradition. Studying the word brings us closer and closer TO GOD. Besides that secondary differences are unimportant.
(And the idea that all you Roman Catholics believe the same thing is so much rubbish. You walk in blind ignorance of each other. You may use a similar catechism, but you interpret it in many different ways)