User blog comment:Arbington/ME3 Theories/@comment-899316-20100630185226

Well, the galaxy stands a pretty good chance defensively. Offensively, we might not do so well against even the 300 Reapers from the cutscene, and how much do you want to bet that wasn't all of them? Plus, not everyone could hide in the Citadel, so most of the galaxy would be left out, abandoned by the Council. Shepard would still have a lot of work to do.