It's pretty amazing what they can do however i'm not impressed.
Everything those kids did was hinged on physical ability. Not to diminish their achievement, but a task requiring only physical ability and repetitious training does not astound me. But thats just me and as a scientist i value mental ability over physical ability which is my bias.
I don't think you will ever find a child that will revolutionize the way we live and think because to do this you need to train exponentially more and experience more to be able to develop the brain muscle to a point where it can effectively change the world. Physical training can be accomplished by anyone, being a genius on the other hand is for that exceptional 1% of human beings.