On ‘Jeopardy,’ Watson’s [Redacted: Spoiler]

Nice to see some numbers on Watson’s much discussed reaction time:

Watson, on the hand, does not anticipate the light, but has a weighted scheme where when it is highly confident it can buzz in as short a time as 10 milliseconds, making it very hard for humans to beat. Less confident, and it buzzed more slowly.

Also, this quote:

“It sort of wants to get beaten when it doesn’t have high confidence,” Dr. Ferrucci said. “It doesn’t want to look stupid.”

This line:

The researchers also acknowledged that the machine benefited from the “buzzer factor.”

And the other players’ take on it:

Both human players felt that Watson’s button pushing skill wasn’t necessarily an unfair advantage. “I beat Watson a couple of times,” said Mr. Rutter.

After yesterday's dominance, it was a little surprising to see how (relatively) few questions it answered this time, and with lower confidence. Any explanations?