User blog comment:Raven Giordano/What would your ideal ending to Mass Effect 3 be?/@comment-4125114-20130313170903/@comment-1440333-20130314192015

Except its stated in game that the forces of the Galaxy have no hope against the Reapers. That fleet was created entirely to construct the Crucible and get it to Earth. The whole Fleet Shepard gathers is in that battle.