BattleBots Delayed, Will Go Brains Over Babes
Personally I'd rather have something happen rather than watching a robot drive into a wall repeatedly or start attacking a box for no good reason. AI just isn't up to the level where the average joe with a bit of technical knowledge can build a fighting robot which will actualy do anything of value.
Could it be done? Sure, but your going to need a much bigger budget to do it.