In WSB, the Kwacker has been pretty much crap -- unless you consider finishing in 11th (out of 17 finishers) to be good results. They did get an 8th at Sugo which is their best finish this year. Last year they got 2 4th place finishes, but in both cases, the rider had home track advantage (Walker at Silverstone and EBoz a Laguna Seca) so that can be credited to the rider more than the bike.
In fairness, they did outscore Suzuki last year (beat Suzuki 16 out of 26 rounds).
I give EBoz, and the mechanics an crew of his team, 99% of the credit for his results.
Given the lackluster results for Kawasaki's MotoGP effort to date, he is lucky that Pitt got that ride this year.
What I found amazing this weekend is how far off the pace he was in practice and qualifying -- when someone makes that much gain, I usually assume that they were having difficulty finding the right setup, but, it Eric is telling the truth, they didn't mess with the setup at all -- it was all the rider finding what works!