I think the key difference is that The Church of Jesus Christ of Latter-day Saints doesn't adopt the creeds (like Nicene ... in wikipedia) of the early centuries after Christ. We definitely do believe in the divinity and essential role of Jesus Christ as taught in the New Testament.
> We definitely do believe in the divinity and essential role of Jesus Christ as taught in the New Testament.
Most Christians would disagree with the notion that Elohim and Jesus/Jehovah are two distinct beings and that this unity is found (albeit, not explicitly) in the NT. Furthermore, Jesus' role in the the Mormon Plan of Salvation is a significant departure from the soteriology people usually derive from the NT. I understand one can argue otherwise and people do (e.g. Swedenborg's soteriology), but it's an extreme minority position even among the schismatic mess that is Christianity. You can argue that the Mormon movement got these right where everyone else got it wrong because Joseph Smith and subsequent prophets were given revelation to correct the errors. Accept the truth of that or not, it's more evidence that the Mormons are something significantly different from what we'd normally call Christianity. From that perspective, perhaps the Mormon movement is the true Christianity and the rest are something else. But there is a huge difference no matter what side you take.
> For actual teachings, the Book of Mormon (with the Bible) is all about Christ.
But is it the same Christ? The Mandaeans have scripture that teaches about Christ. But in these scriptures, he's evil. Islam's Quran also talks a lot about Christ. But he mostly exists to disavow doctrines about him that Islam considers heretical. And even confining ourselves to the canonical gospels, the Christ of John and the Christ of Mark are noticeably different. You can certainly argue that if the Book of Mormon is "the most correct of any book on earth" and it reveals aspects of Christ omitted from or distorted in the traditional Christian scriptures. So it's the same Christ, represented more accurately. But if you reject the Book of Mormon as inspired, it's easy to see the Mormon Christ as something else with significant differences.
Thanks for that thoughtful and interesting comment.
I am very grateful that the Book of Mormon promises that we can find out for ourselves if it is true, if we do it His way. Then, one has independent knowledge and can use it to go forward, and increase the knowledge with more & more applied experience. :)
For actual teachings, the Book of Mormon (with the Bible) is all about Christ. I believe one can search by topics, at, for example, https://www.churchofjesuschrist.org/general-conference?lang=... . I have written more on what I know and how I know it, at my personal site: http://lukecall.net .