I don't know where you are gathering this information from. Maybe just your personal experience? Could it be that you went to their parks with an extremely high expectation and already had it in your mind that you weren't going to enjoy yourself? I've been to MANY Six Flags parks and can say they are no comparison to Busch or Sea World. Both of those parks offer so much outside of their rides and shows. They are Animal based and Six Flags is Ride based. So comparing them to Six Flags makes no sense.