Tyrian World War

So I was reading some topics in the lore section of the Guild Wars 2 forum, I found this post(link here) that had my interest, since my English teacher wants us to find something to debate on for a post. I only read the OP(opening post) so I don't get spoiled by other posters.
Now, I know what all of you are thinking: "But wait! You haven't covered the other two playable races yet!" Well, since I'm too lazy to do posts, which no one even reads, I'm only to post every 2 weeks like my teacher instructed.

On to the real thing. The OP stated that the Inquests are the most powerful antagonists, and I agree to that, but here comes the problem. He/She states in the 3rd/4th paragraph about exterminating the Human race. Oh, you're threatening the Humans' existence? Well I think Queen Jennah and Logan has something to say to that. Of course, with the addition of the whole Destiny's Edge and the Pact.

The problem here is not just exterminating the Human race, also with the Charr army and war machines. If, somehow, the Inquest made alliance with the Flame Legion and some Charr that still go against the alliance with Humans, the Flame Legion use their magic and the rest of the Charr probably even have a warband to begin with. There wouldn't be any war machines to bring.

By now most of the five playable races have probably all joined the Pact, along with the five "lesser" races from your personal story. Then here comes the 6th paragraph. Even with the combination of the Centaur, Nightmare Court, and the Sons of Svanir, they would have to have ridiculously high moral or they're most likely crazy to take on the whole Pact.

And that concludes my ranting rebuttal against the OP.