Okay I've been listening to my Gears of War 3 idle boosting, its been 15 mins and practically nothing's happening. All I'm hearing are splashes from movement around water. I switch my monitor to the game, and I see me and the 2nd player (or the other controller) stuck in a stalled capture (meaning both leaders, me and the 2nd controller, are caught). No bot was attempting to do anything but gather around like vultures to the corpse. Eventually the round's time limit ended because of lazy bot heads.
This explains why bots are so useless.