Well you said it's very easy to cool which hasn't been my experience, im considering - for the first time since 2017 to delid a chip.
Im testing against a 12900k cause that's what I have, I don't have a 285k available.
Power usage - at least against 12900k - isn't such a huge winning point. It achieves 15 to 25% better performance (depending on the game) at very similar power draw (actually in TLOU the 9800x 3d draws more power, lol) . That's not great since the 900k is a 2021 chip mind you.
And before people comeback with "yeah but you are overclocking the 3d", the below video is stock with -20CO on top, no PBO. Still hits 110 watts