His genius lies in his ability to calculate probabilities for his double Jeopardy bets.Thats what the genius would say if he were humble and also doesnt quite understand how different his brain is from everyone else.
You can be the best clicker ever and it wouldnt mean **** if you couldnt answer the questions correctly. It would just mean you would lose faster. There is a reason he is cicking before someone else, it isnt because he has faster twitch thumb muscles.
Everything else is just memory, having a wide general knowledge base, clicker speed, and memory recall. It's not being a genius.