I have read that violinists spend hours, days, weeks "working in" their instruments in order to be able to get the response & feel they are looking for. That is if someone, even another virtuoso, picked up Nigel Kennedy's violin and played it for a few minutes, then it may take Kennedy hours/days/weeks of playing before the instrument is back to where he wants it.
If this is true then the test really doesn't prove much as the tone & feel of the violins will be changing every time someone plays it.
If this is true then the test really doesn't prove much as the tone & feel of the violins will be changing every time someone plays it.