[Coda]

You can get a 50% average just by picking completely randomly. This also prevents anyone else from being able to detect YOUR patterns and gain an advantage over you.

Of course, this also means you can't do BETTER than 50%. The people who have really high averages try to guess what the other person will do based on factors like the appearance of their avatar, their username, their personality, and what has happened in previous battles with them.