These aren't two dim guys its playing against. For virtually every question asked, at least two contestants knew the answer. So no matter how good Watson is at knowing the answer (namely really really good), this isn't an advantage against a panel that is also really really good at knowing the answer. Watson's Jeopardy advantage must be elsewhere.
To quote Ken Jennings: "As Jeopardy devotees know, if you're trying to win on the show, the buzzer is all. On any given night, nearly all the contestants know nearly all the answers, so it's just a matter of who masters buzzer rhythm the best.
"Watson does have a big advantage in this regard, since it can knock out a microsecond-precise buzz every single time with little or no variation. Human reflexes can't compete with computer circuits in this regard. "
He goes on to say that the game should not be changed to account for this.
To quote Ken Jennings: "As Jeopardy devotees know, if you're trying to win on the show, the buzzer is all. On any given night, nearly all the contestants know nearly all the answers, so it's just a matter of who masters buzzer rhythm the best.
"Watson does have a big advantage in this regard, since it can knock out a microsecond-precise buzz every single time with little or no variation. Human reflexes can't compete with computer circuits in this regard. "
He goes on to say that the game should not be changed to account for this.