The Christology of Mormons is much different from that of other Christian groups, including the Catholic Church.
Mormons don’t believe in the Trinity, for one thing. And they don’t believe that salvation comes through Christ’s sacrifices. They think of him as more of a model for what they have to do to gain their own salvation. Recall the famous Mormon saying:
“As man is, God once was. As God is, man may become.”
[Lorenzo Snow Summarizing Joseph Smith, Jr.’s King Follett Discourse]
BTW, they are walking this whole “small-g god was once a man” business back now a bit because of the reaction that it gets among non-Mormons.
For much of rest of the Christian world, although theology itself can develop, the deposit of faith is “set in stone” and unchangeable as part of revelation which is now closed. This is especially true for Catholics and Orthodox. However, it’s not at all true for Mormons.
Revelation is not closed according to the Mormon church and the “essentials” of what is commonly believed by members of the Mormon church can shift and have several times. It’s really all very fluid.
PS. I have a Mormon uncle and Mormon co-workers with whom I have discussed this many times.