I think you confuse “what the church tells you to believe” with what the Magisterium of the Church teaches as guide by the Holy Spirit. There is only one truth, and that is the truth as laid down by our Savior. As in John 6 some truths are hard to swallow, no pun intended, and that is why there are so many different denominations in the Protestant realm. There are some truths that are to hard for Protestants to accept, so like in John 6 you have gone your own way grumbled among yourselves.
Being a Catholic is being willing to accept the truth and to put that truth into practice every day of our lives. If living the faith of the CC that is based upon truth, brings us some small graces from God, and we attain some level of holiness then we are better for it. It does not mean we are better that anyone else. Absolutely Not. The fact is that we are all sinners who at times can loose some of the holiness we may have been granted, and because of the truths, we the CC have the Sacraments to redirect our lives back to the path of truth which may enable us to earn that small grace back into our lives. This post is not intended to offend, just one mans opinion.