Alright, posting here because I am completely fed up with my fellow horde players in this BG.
The only guaranteed ways to win IoC as horde are:
1. THE WHOLE RAID sits on boss. alliance comes in, captures keep, runs to boss. Horde kills every alliance player and then spawncamps them at GY for reinforcements.
2. Horde lets alliance open west gate. Horde stands in entrance, turrets provide cover. stealthers capture quarry and refinery.
Those are the only two ways for a guaranteed win. so Please, my fellow horde players. STOP ZERGING LIKE IDIOTS.