This project made me much, much sad... I am a game developer, and when I am testing a new tech I frequently make a pong clone, I even made one with lots of items like this... Yet the game is so much better than anything that I ever made, that I wonder if I will ever be that good :(
Also note that this is sponsored by Google; I couldn't find the credits but apparently (from other comments on this post( there were three separate companies involved in making it. You're comparing the Ping clone you make for a quick technology test to a thing polished to perfection by a bunch of people.
ALSO let me note that EVERYONE starts from scratch. You're never going to be a master if you give up now; make lots of mistakes and try to not make them more than once.