Patch 3.3.3
Looks like they will be doing at least one or two more patches before Cataclysm. They're turning Wintergrasp into a tug of war type of thing in 3.3.3, meaning Horde will probably win more now. It seems whenever they "invent a new strategy" it gives them an upper advantage. Seems its just another excuse to let Horde win all the battlegrounds now, but in my group we have an even split in wins vs losses.