How do you Evaluate a racket?
There is areas of play, that some of the criteria they use is, what is the power factor, the control, the comfort of the racket, the maneuverability and overall playability. This is how usually the testers that play with the frames judges, what it plays like. Then they use the frame for about a week hitting, playing testing the racket with different strings and for different swing speeds, so those factors help the average player understanding of the criteria that was used to give the evaluation.