1. He didn't win. Close doesn't count.
2. 42 years old, 4 back surgeries. Nicklaus didn't have 4 back surgeries, and he won only 1 major after age 40, even though he won 2 at around age 40.
3. In his prime, Tiger won several majors because he had a lead and other golfers pressed and tried too hard to come back, these days the young pups aren't scared of Tiger, though they do respect him.
4. He's 4 majors behind Nicklaus, there are only 4 per year, to win 4 more by the age Jack won his last, 46, he'd have to win 25% of the 16 majors. For any golfer over 40 years old, that's a daunting task. Every year that passes when you're in your 20's or early 30's isn't such a big deal, but in your 40's, that is more significant.
Hey I could be wrong, but there's a large amount of young & talented major winners around, all those guys would have to have bad majors at once, and the numbers don't make that likely.
But we'll see, don't care one way or the other, just don't see it happening...