The E3 2013 trailer the soldiers that look just like this did spew out blue stuff like blood. Also, they react like a human would when they die, nothing like the magitek soldiers we have now. They don't look like the soldiers from the Versus trailer though, but they are in place of those soldiers. So, I'm not really sure. Perhaps they went from soldiers that resembled humans to more modular robots that we have now that are cheaper to produce and also more deadly.