You go to the Lutherans to learn about Catholic belief? Do you also go to the Chevy dealership to learn about Ford automobiles, or to Democratic party headquarters to learn about the Republican platform?
I bet you go to Catholics to learn what non-Catholic Christians believe, huh?
This:
2. The doctrine of justification. Lutherans believe that a person is saved by God's grace alone through faith alone in Christ alone. The Roman Catholic Church, while at times using similar language, still officially holds that faith, in order to save, must be accompanied by (or "infused with") some "work" or "love" active within a Christian.
reminds me of, what else, a joke (soon I'll run out of denominations to offend).
A man dies and meets St. Peter at the pearly gates. Peter is giving the man a tour of heaven. As they approach a group of people huddled together, Peter tells the man to tip-toe and be very quiet.
"Why?", the man asks.
Peter says, "They're Church of Christ - they think they're the only ones here..."
Well, it seems that the Lutheran Church would know why it's different from the Catholic. It did afterall break away directly from the Catholic Church.