- In the first "battle" the UNSC betted that Master Cheif can drick more beer than a ugly brute. The Covenent being the arrogant one, couldn't take loss, so they blew up Harvest like the Pussies they are. Later that evening the Covenent camed back for a rematch on the space elevator. The UNSC knowing they can't win this bet, as the bet was to eat as many grunts as possible; which we all know is impossible as grunts are made of fart and shit, rigged the elevators do go slowly. All the covenant died in the elevator when Yayap III farted in there killing all.
No one really cares about who won in the battle. The UNSC killed themselves after realizing they ran out of beer.