I still don't know if it is true. At first, I picked up a set randomly. Then I read some posts referring to the low scores from this set of popular templates and decided to change the AI template 2 days before the test. Cantaloupe suggested in some post that the AI template should NOT be just cloned. Therefore, I picked up one I believed used less by the others, recited it in 2 hours, and practiced it in GMATPrep the next day just to get some sense. Finally, I got 5.0! It may not be a great score for some, but it is more than enough for me.