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-50.80.96.33-20130222044555/@comment-1786741-20130222053149

The Flood had far superior numbers than the husks that were also more powerful. The Reapers are nothing compared to the flood so the Forerunners could easily wipe them out. They're organics that were converted into synthetics, they will be obliterated by the pure numbers of the Forerunners.