Have you ever taken a comparative religion class? Or just a world religion class in general? There's Hinduism, Buddhism, Islam and maybe even Zoroastrianism but how often does Mormonism get thrown into that mix?
Think about this, all the terms you use to talk about Christianity, but with completely different meanings. You talk of atonement, they talk of atonement. You talk of God's love, they talk of God's love. You talk of God as your Father, they talk of Heavenly Father. Yet each of those means something different
Their idea of atonement is not the Evangelical Christ view of atonement, nor their idea of God's love the same, nor their view of God as their Father.
It all sounds the same but all the meanings are different. Apologetics with a Mormon are, I would guess, a waste of time. How can you move a conversation forward if you're both working from different dictionaries? (To add to this, they always come in twos and have "lying for the lord," as backup for getting into tricky conversations.)
So what is the apologetic we use? Relationship.
We use the dictionary we both have in common, our humanity and need for community, to build a relationship wherein we can form trust and literally show 2 Peter 3:14-17 to those of another religious dictionary.