Like Nicklaus, Woods has won 14 career majors at the age of 37. Nicklaus did not win his 15th major until the third major after he turned 38 (The British Open). Nicklaus then won two majors at age 40 and his final major at age 46.
Tiger's pace has slowed considerably, but his pace was so fast when he was younger, that there is still plenty of time to get back to the top of his game and catch Jack. But he needs to win one soon...
Data via PGATour.com