I think if you were ranking (healthy) players by tier in this series it goes like this:
Tier 1- KD
Tier 2- Tatum
Tier 3- Kyrie
Tier 4- Jaylen
Tier 5- Smart
Tier 6- Horford/White/Curry/Brown/Claxton
Tier 7- Drummond/Mills/Grant/PP/Theis
Tier 8- Dragic/Blake
That's around what DARKO would rank them as well (DARKO might put KD and Tatum in a tier, but I'm dubious about making that call). Boston has the best 3rd guy, and you could argue that our tier 6 guys are the top 2 in the tier for sure, but not sure that's a HUGE advantage compared with having the better #1 guy and better #2 guy.
Talent-wise these are similar teams. The Nets have the better top 2, the Celtics have a decent 3-6 advantage, but it's not massive.
If this was strictly about offense I think Kyrie could be #2, above Tatum, at least for a series. But because defense matters, I think you have the top 4 rated correctly. Smart as well.
However, I don't think there's any reasonable case to be made that Horford and White are on the same tier as Curry, Brown, and Clayton.
Brown and White do a lot of similar things on the floor I don’t see a discernible difference between the two. I prefer Horford to Claxton in the playoffs as a veteran who is the more well rounded player.
So imo…..
Brown = White
Horford >> Claxton
The obvious statistical differences between the two favor White.
One thing that could maybe be called a push is three point shooting percentage. White is career .340 while Brown is career .327. However, Brown shot 40.4% this season while While shot a career worst .312, including inly .306 as a Celtic.
But 3-point shooting overall has to go to White, because White can get his shot off. For his career, White averages 5.2 threes per 36, 5.6 as a Celtic, while Brown averages only 2.0 threes per 36, 1.9 this year. This to me indicates a shooter who needs to be wide open to take his shot and even playing with KD/KI doesn't turn him into a volume shooter. Threes from Brown aren't much of a cause for concern for the Celtics going into this series.
White is also a higher usage player with a better assist rate, both for his career and in his time with the Celtics.
Maybe these differences don't matter so much if KD and KI are at peak level for a the whole series, but if not and Brooklyn needs more from Brown than one made three per game, they aren't likely to get it.
This is probably controversial, but I think Robert Williams is the third best player on these two rosters. Without Williams, I think the series is in the toss up category. With Williams, I think think the Celtics are clear favorites. I’m going Williams back Game 5 with the series 2-2 and Boston in 7.
At the very best, Rob is the 5th best player on these 2 rosters and the third best on the Celtics.
If it had been Jaylen who went down with the meniscus injury instead of Rob, would you really think the Celtics were in better shape in this series? That's a stretch.
One of the narratives pointing towards a Nets series win is the failure of the Celtics offense in crunch time/high leverage situations. I guess the idea is that crunch time stats will be more predictive of a team's offensive performance in the playoffs than the unfiltered full season offensive rating for reasons that are easily available to our minds. I used pbpstats.com's leverage filter and grabbed every team's offensive rating, offensive rating in high/very high situations, and playoff offensive rating from 2013-2021 (the only years with leverage and playoff data). Then I tried to figure out which correlated better with offensive rating: full season offensive rating or the high leverage offensive rating.
Note: This isn't really even remotely close to the best way to do this. This is really not even a good way to do this, but I wanted a quick and dirty answer. This answer is pretty dirty even by dirty answer standards, so use this for entertainment/shittalking/non-wagering purposes only.
As you might guess, the correlation was significantly stronger with the full season offensive rating.
I think the issue with doing this for the Celtics is that the team was very different in the first half of the season when they were losing those crunch time games.