This is a recent interview with Rev. Robert Jeffress by Anderson Cooper. Jeffress is an outspoken supporter of Gov. Rick Perry and pastor of a large Baptist church in Dallas. I think this is perhaps one of the worst definitions of “cult” I’ve ever seen. Even with a pre-qualifier that it’s a “theological definition,” it’s so broad that it becomes meaningless. It’s only use is as a pejorative.
I think Mormonism is in fact a different religion that Traditional Christianity. The Mormon view of God’s place in the universe and His relationship with man is so radically different than what Christianity teaches it’s hard to meaningfully align them unless you’re only looking at the most cursory comparisons. That being said, Jeffress does a terrible job here explaining the differences and an even worse job as an ambassador of Christ. His definitions and explanations appear to be for no one’s benefit except Rick Perry.
For a different perspective by a clearer thinking Evangelical, I recommend this article from the Washington Times by John Mark Reynolds: Why Evangelicals Must Stand Up to Anti-Mormon Bigotry.