Ric,
You may want to take into consideration the other balls Track makes. If a ball like the Animal Untamed is rated a 9 and the Unleashed a 9.5, on the same condition with the same drilling, the Crunch Time will not be as aggressive on the backend as the others. GRANTED...if you put a 5 x 2, 5 x 3 type drilling, you can make the backend reaction stronger. However, if you throw the Unleashed or Untamed and the Crunch Time back to back on the same condition, you will notice the difference. You can manipulate ball reaction based on drilling, but I believe the ratings are based on a straight over label drilling on a typical house shot (synthetics, 38 feet of oil with a stronger concentration from 10 to 10).
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If anyone out there is worried about the scores being too high, try duckpin!!