User blog comment:James12708/Reapers VS. Forerunners VS. Angels from Darksiders VS. Humanity from Halo VS. Council and humanity from Mass Effect VS. Imperium of Man/@comment-50.80.96.33-20130125025125/@comment-1683193-20130125065443

Someone estimated that to do that,the Ark would need to produce 71 cubic km per second,meaning they could produce an entire battlefleet every second if they used it to make ships. I doubt even the Star Forge comes close to that.