Armageddon is fictional.
How do you know? When the scriptures prophesying Armageddon were written, how did the writers know that Israel would be scattered, then gathered? How did they know that the Middle East would be the world's hot spot in the latter days? When they wrote aboout the third temple being built, how did they know about the controversy that would surround it? Qur'anic scripture speaks about the Jews being the interlopers, and that they would be the ones Allah wanted dead in the last days. Biblical scriptures say that God would bring the Jews back to their ancestral homelands and that he, personally, would protect them. Based on every confrontation to date, it seems the Biblical scriptures are winning out.
The fascinating thing is that the Muslims believe everything that happens is the will of Allah. So basically they ought to see the return of the Jews as the will of Allah. Instead, they say Allah is gathering the Jews so that the Muslims can kill them. That's what makes Islam a twisted religion. Even after Armageddon, there will be Muslims that will refuse to accept the Jewish victory as the will of Allah. Even after they see with their own eyes the return of Jesus/Jehovah, they still won't be able to believe it and they'll refuse to go up to Jerusalem and celebrate the Feast of the Tabernacles.
If you know prophecy, you'll see that events are happening that fulfill Biblical predictions. If the scriptures have been right in every detail so far, I wouldn't bet on Armageddon being fictional. The Jehovah's Witness version is fictional, granted, but then their doctrine was formulated before the Jews returned to Palestine. Zechariah, Isaiah, Ezekiel and others indicated Armageddon would take place in the Middle East, and they mentioned "Jerusalem" by name many times. I'm betting that Armageddon is not fictional. Only time will tell.