Djokovic uses a custom made frame with a mold that's similar to his old Head racket; I think Tursunov does as well. Basically, Wilson made frames for them that played like their old models.
You can look at Yahoo sports to see what racket he's using at the Hopman Cup; the pj for the KBlade and KBlade tour look similar but I can't tell them apart.
All the racquet companies lie. Its how they do business.Why would Wilson lie to us? Why? Why?