The teardowns are rarely 100% exact being based on assumption and equivalents, and in the case of the PS5 (which is what I assume you refered to as $450) even moreso.
Afawk Sony will use its own manufactured components for a few things (they own dozens of manufacturing plants, 35 in Japan alone, specialized in optics and electronics), including the very important SSD solution, which (if true) would give them a lot more latitude in their own pricing.
Of course the overall price is still a concern particularly for 3rd party elements (such as the AMD parts) or the overall assembly which until recently was in China (not sure if this has changed) as well as shipping costs.
I'm pretty sure the reports on Sony's price concerns we've seen about the PS5 is precisely because they're aiming for a $399 launch, $450 at the highest.
Thank you.? I don't see anyone arguing that Series X doesn't have a more powerful GPU/ CPU combo, coming from the same supplier (AMD), therefore, yes, more expensive?
For the part I bolded, I can believe that. The estimated BOM is less than Series X. But MS can take a bigger loss, sell a cheaper console....and don't care about console sales....
It doesn't add up.