http://imgur.com/a/1Ruhe
This is what happens in 90% of all BG's. Horde gets more and more gear and alliance gets more and more unwanted by any PVP-player. Increased Honor-Rate DOES NOT make a difference, because you make no honor anyway.
EDIT: AND YES, I WILL CHANGE FACTION TO HORDE ASAP BECAUSE PLAYING PVP IS POINTLESS ON ALLIANCE ON THIS SERVER. YOU SIMPLY CAN'T GET GEARED ENOUGH FOR ARENA. THERE IS A REASON WHY MOST OF THE 1800+ TEAMS ARE HORDE.
EDIT-2: DO NOT BE STUPID AND SAY YOU WIN ANYTIME IN AV. AV HAS A SMALL ALLIANCE ADVANTAGE WHICH MAKES THE DIFFERENCE.