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-5436239-20130130074424

Forerunners by a land slide. Sorry guys, I love Mass Effect, but the way everything is designed...They wouldn't stand a chance. They could have a fleet containing more personnel and firepower than the entirety of all Mass Effect races, including the Reapers. The war would be fought with a shoot and forget mentality, and indoctrination would be rendered useless within several years of the war. A single shot from the forerunner dreadnought would render the Citadel incapable of supporting life. They have limitless numbers and resources, and their warrior class would decimate every single boarding party. The forerunners have a massive advantage. Oh, and, they don't have to worry about Mass Relays. I feel either Humanity from Halo or the Angels would take a very very distant second.