A quick couple thoughts...
1)Tiger had a big Rc. push in the collectable market, but it really fizzled quickly(Compared to say Pujols, or Lebron)
Then a few spikes like his crushing the field headlines...one being the "Tiger Slam" which was golden

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2) When all is said, and done, Tiger will have(sounds funny..lol) created many "I gotta have a Tiger collectable" like the latest Masters. Where in other sports it's usually a season long achievment, or a record book assault that gets attention.
Also, He appeals to such a large consumer/fan base, heck my girls know who he is. IDK..Maybe it's the optomist in me. plus, there's only 1 legit product!? maybe 2.
Kindof a ramble..House full o' people