Considering the demonstrated lack of ability to comprehend even the most basic concepts of the Truths given to and taught by the Catholic and Orthodox Churches for ~2000 years, it is understandable that protestants would have a difficult time wrapping their arms around Truth. We can only pray that protestants will open their eyes and hearts to Christ through a sincere search for that Truth.
And that's the difference. We don't accept what is taught by the traditions of men. We rely upon the infalible word of God. It was, after all, the Church that taught us that.