I pretty much agree with your assessments. Grading is somewhat subjective without a hard rubric, but I'm pretty much with in a + or - of your assessments, although I had to miss a couple of the games due to work, so my assessments might be incomplete or slanted in a different direction due to incomplete data.
However, I'm not posting this just to say that I agree. I'm also posting to give kudos for a very well-written and well-thought-out piece. It was an enjoyable read.