donquijote
G.O.A.T.
In my personal opinion even half of the people reviewing rackets for TW are not good enough to be able to provide a relevant review of most rackets they are reviewing.
I think they are doing a great job compared to other retailers' tests/reviews and TW University database is one of the best sources to get information.
I am not sure how long the tests are done but it looks like some testers actually work on the racquets as I see comments like 'it was very stiff first but I tried a multi and it became very comfortable'.
As for their skill level, I think most of them are at a higher level than the average forum member so nothing wrong there. Pro-level players wouldn't spend their time testing these racquets and they would not like most equipment that don't suit a higher level of tennis.