Nicklaus won his 18 majors by a combined 44 shots.
Woods has won his 12 majors by a combined 56 shots.
The man is a machine - absolutely incredible. When he's in the last pairing, he is completely inured to the media and public circus that surrounds him whilst the poor bloke trying to out-score the #1 golfer in the world has rarely been under that sort of public scrutiny. With all the pressure of a major, is it any surprise that no-one has ever been able to beat him in such circumstances?