Well, I would say that the previous customer that I worked for during many months was very satisfied, so was my direct boss. They didn't want to fire me anyway, just to freeze my salary.

My point (same as in the article) is that performance is not the question, but market forces. It turns out they really lacked the power to give me a bad review. The same person that ordered the good review to be burnt and wrote a new one (very bad, I guess) was a few days later offering me 10% more pay, just because I was leaving.