Why do Jehovah's Witnesses believe Joseph Smith was a prophet of God?

You mean Mormons, not Jehovah’s Witnesses.

Its the way they are brainwashed.

I'm sure that J/W's will be pleased that you picked them out from all the other Christian denominations. It seems that folk on here talk about J/W's more than any other denomination, which means good or bad, folk are paying attention to them.

disjunctive syllogism alert

JW do not.

JW see contradictions between Mormon teachings and statements in the Bible. For example, at Ezekiel 18:4, the Bible says that the soul dies. However, the Book of Mormon, at Alma 42:9, states: “The soul could never die.”

He wasn't and we don't believe he was. Where do you come up with this garbage? We follow Jesus Christ as our exemplar and he sent his disciples out by twos, Luke 10:1, and they went door to door and every place they could find people to speak with about the Good News of God's Kingdom, and that's how Jehovah's Witnesses have been doing it for a hundred years. It's still a very fruitful way to reach people.

Do you have a link to an article from "The Watchtower" where the JW's publish such a claim?

BONUS question:

Are you Trolling for angry responses from Mormons AND JWs?

If so, best wishes for a satisfyingly large number of responses.

(I am a subscriber to neither Belief System, but I appreciate the effort which goes into giving the APPEARANCE of being woefully ignorant.)

I think that is the Mormons.

Is Jesus your God?

Why does Jesus say he has a God at Revelation 3:12?

Does your god have a god?

They do not. You are confusing them with Mormons.