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-50.80.96.33-20130112033616/@comment-2250460-20130112034229

Answer this question: How much firepower do Reaper Dreadnoughts have? It's in the Codex.

Now, look up how much firepower IoM and Forerunner ships have, this should end the conversation right here.