User blog comment:TheUnknown285/A very interesting image from the remake of Halo (yes, this is ME-related)/@comment-4876714-20120402213531/@comment-3399608-20120403003640

Forerunners ave 7 weapons of mass destruction (to put it mildly). Even if the Protheans somehow got the advantage, the Forerunners could just rage quit and take all sentient life with them. So the Forerunners can't lose, they may not win, but they won't lose.