I agree with some of the comments here, and whilst 'entertainment' factor is all down to personal taste, technicality is much less flippantly judged.
I think it's a given that he is definitely improving. But 9's, regardless of entertainment factor or tricks is a pretty serious score. It means that a dance it's borderline perfect, with perhaps the odd little minor issue – this is how the judges have described it in previous series.
Now, no matter how entertained anyone was by the dance (I personally don't think he pulled the slapstick off particularly well, he looked far to self conscious), I think an unbiased person could see that any of the dancing that he did actually do was 'ok' at best, but for the most part was very lumpy. He has improved and well done to him for doing so, but 9 is a pretty huge score for something that was lumpy and self conscious. I'm not a conspiracy theorist, and roll my eyes at most of the 'it's fixed' threads, but the confusing over-scoring two weeks in a row is giving me pause for thought here.
As for judging him on his position in the leader board instead individual scores, I can kind of see that point of view. But, individual scores make up the position in the leader board, and I have to say, 4th place? Come on now. For me, he should be just above Felicity and Vincent, at best and that's being extremely generous - as they both danced to a similar standard, but Felicity and Vincent had much more content.
I'm completely flumoxed here, I'm looking at all the positives of his dance AND being generous, but still cannot get how it warrants 9's and a 4th place on the board!