[quote=@Rtron]
<Snipped quote by Double Capybara>

I thought that was the arksynth itself, not the mortals controlling it? 
[/quote]

Well, yeah. But a mortal without control to the armor is just a log. I mean, it could be a way to incapacitate some of the troops, but even then, it would just send Xerxes from "Screwed in 5 minutes" to "Screwed in 7 minutes".

From what I understood though. Lif and Termy are the ones who know it. I just don't see the point in discussing this too much anyway, Amestris is bound to lose.