I don't think Apple will have spent an awful lot of time on deciding on placement of major components.. It's easily done with a few bricks the size of the components and a tin tray

Seriously, component placement is usually done with software these days, as is the harder part of getting them wired up and working together. Some companies use the same software to do this, which is why some of these gadgets often come out looking the same. But I can't say if Apple uses the same software as Asus. Probably bespoke in their cases.