There are many available and generally accepted definitions for science and the scientific method.What is science if not observation? Measurements are a form of observation. No?
But we're talking about something different.
We are talking about measuring (or estimation, it's better) the performance of artifacts, products that have already been made by man and not by nature.
There is almost no science here, there is pure engineering.
There is nothing wrong or offensive in this nuance, it's just a fact.