If you want to change the discussion to what the Z13 has to compete against, sure. But pinning the high cost of the Z13 on Strix Halo is nonsensical.
When I say it's not a vacuum, it includes Nvidia too. They have high margins because the high price is artificially set. I've seen this when Intel had their Iris Pro. Nvidia bundled it competitively so you had no price advantage at the end.
Because they have the leading share, it gives them flexibility to price lower end ones however they want. The highest end consists of consumers who care lot less about how much it costs, they just want the best. So that's for where the real money is, and everything below it is flexible. And I doubt they need to adjust a ton themselves. The OEMs selling them might have to.
It's been said the low end is just to make up for fixed costs and R&D and makes zero profits, and as you go up the stack you get more and more profit.
Now consider Strix Halo is at the top. Who has the advantage over who?
Which is why the result where Strix Halo is significantly dropping power consumption on battery but getting worse battery life at load than the M4 which keeps the same power doesn't make sense.
How did they test it? Sometimes the testing differences matter. Did the battery life testing with CB come with the performance, or did they do battery testing first, and they did CB testing later?
The only way to do it properly is to run CB on a loop for battery life, while watching the performance and releasing data on both.
And power management is a strange and wonderful world. My XPS 12 performed better on Balanced mode in SC2 than on High Performance. And it didn't really decrease battery life.