You apparently do not understand my statement...you can make an assessment without performing the proper test...this is your assumption and nothing else...which is basing data off a personal assumption...this is not how data or statements are based or understand. You have your opinion but understand the limited relevance of it...

I understand your statement. Is it a perfect test? No of course not. But are you really going to say there is zero difference between a ball today and 15 years ago? You don't need a proper test to know that, nothing manufactured is exactly as it was 15 years ago. Are they close? Yes. Is there some super vast difference? No.

Hell I print diapers for a living. Do the ones today look and act like ones 10 years ago? Sure. Are they exactly the same? Nope. Different plastics, and different inks. They are slightly better but not a vast difference.