In fairness, Jimmy Fallon is an unexpected opponent - there's no way Brosnan, or anyone else, could have lost against Sean Bean. But given Mr. Brosnan's lack of skills, well, he's not coming out Onatopp, because, Mr. Bond, we expect you to die. Another day. Because you only live twice.
To be fair, Fallon should bring out Roger Moore and see if he does better. What's the worst that could happen - would the sky fall?