I don't own one of your turbos as yet Stao, my responce was pure hyperthetical, and sarcastic.
My point is:
All dynos are not identical,
All engineers/ mechanics have not the same skills,
All tuners have not the same skills,
...and yet I am 99.95% confident that all of your turbos will produce less than 5% difference in results than your magic [rollseyes/] turbo, given they are used with the same hardware.