Actually, not too long ago, the total number of Mormons in other countries surpassed the number of US Mormons. Much of that growth has been in South American countries and other predominantly Catholic countries so, that would be why so many Catholics are converted. There's no particular emphasis on converting Catholics its just the LDS church has found more success there than in other countries for whatever reason.
As to the rest of your posting, no, we are not traditional Christians. We believe that the church the Christ built when he was here on Earth, fell away. We believe we are a restoration of that church.
We also believe that all Christian churches have most of the truth, and many non-Christian faiths have much of God's truth as well, but many of the doctrines and teachings of the original Christian faith, in our opinion, have been influenced and colored by the interpretations of well intentioned but fallible men.
We are all imperfect and we all sin so, without direct revelation from God, as the prophets of the Bible received, man is left to perceive God's will through his own, limited understanding. As a result, error was introduced into Christ's teachings. Again, according to our opinion.
Sir, I wish to meet you and shake your hand! A LD Saint that actually can say they are not traditional Christian is a rare bird! Thank you!
I was not aware that there were more LDS outside the US than in. Does this mean we are going to start getting LDS illegals across the border?
Calling star Kolob....calling star Kolob.
Come in, O heavenly abode of numberless spirit children.