I believe it is because the robot is a weak manager. I have been playing CSN/PB for 12 years and I almost always have a better home record than away. This season my three teams have a combined 96-34 home record (.738) and my three teams have a combined 79-46 road record (.632). That is about a 17% gain home over road. The only consolation is that the robot is equally inept for all of us. I believe one of the main keys to winning is to be an active manager and always manage your home games. I'd be curious to see what other have to say.