And the next post says "dynos are tuning tools. Don't get too concerned about the actual number. The numbers are relative."
Which is 100% correct. Comparing one dyno to another is futile exercise. Even comparing the same brand dyno to another is not by any means scientific. This is why you must look at the DELTA between the runs... THAT is accurate.
It's obvious that a Dynapack is going to read higher anyway because it's not going to account for losses from rotating the wheels and tires. It removes a variable from the equation which I think is better. The less variables you have the more accurate the result.