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-50.80.96.33-20121202060925/@comment-1786741-20121202063106

I don't think Reapers can win on Indoctrination alone. After all, it's only meant to supplant their main invasion tactics. The Reapers are simply dreadfully outmatched in terms of firepower compared to these other universes.