Companies can manipulate testing to better satisfy what the consumer wants to see before they buy a product. For example, I know my car pulls hella harder in the morning when it is 50 degrees outside, than it does in the afternoon at 90, so if I dyno my product first thing in the morning I get good results, now the motor is hot, and so is the day so on to testing the competition, or older product from comparision. Now I am not saying AEM or any other company does this, but hopefully you can see that published results aren't alway the best method of deciding which product to buy. It's all about the benjamins baby.