Believe what? In God? Then Muslims and Jews are good, theoretically. In Christ? Mormons and Jehovah's Witnesses are in good shape.
C'mon now. That statement defies your handle.
Obviously, it was not a complete statement. I was not trying to write a theologic exposition. On the other hand, the basis of Christianity is faith. If you’ve got it, then it doesn’t matter what church you are a member of. There are plenty of Catholics who have the requisite faith, just as there are plenty of Baptists who do as well.