Taking a look at Brown statistically for this point in the season and I would say that he is only having and OK season relative to the expectation of a Max guy, #2 on a top team. He is scoring 22 pts/gm on about 17 shot attempts (which is down from the last few seasons). That is not bad. His 3P% is down some from his career at 34.2%. Assists and Turnovers are a little better than the last few seasons. Still pretty much a 70% FT%, about his career average. So statistically, I look at the traditional stats in aggregate and say good, but not great.
If I look at things more subjectively, based on watching the games, he is still a top defender and a mature presence on the court. Does plenty that does not show up in the box score. Seems to be evolving his game to make others better. Is competitive, shows effort.
We'll see how things go the rest of the season and in the playoffs. Scoring 20+ per game (with average efficiency) while also being at times the best defender on the court still puts a player into an elite category. I don't know if that means top 20 or top 30 or what, but it is still really good. He will be judged by how he does in the playoffs in the end of course.