User blog comment:BeastMan14/Season 2 End Celebration Battle: The UNSC vs The Union of Allied Systems/@comment-422690-20130513214709

Space battle: the UNSC takes this by far. They have nukes, railguns, and the like, rather than cannons and turrets. The Alliance fighters will overpower the UNSC's, but that's worth nothing when they don't have a place to land.

Ground battle: The UNSC takes this one, too, solely because they are on the defensive. The armies would be evenly matched otherwise, but the Alliances' position works against them.

Overall: UNSC wins against the Alliance, but then get slaughtered to a man by the Reavers.