Thanks @wetab73, I got your point.
However, from the PoV of a system administration those differences can bring different contributes and requires some adaptation in the shell scripting (eg. CPU arrangement 4:4 vs 6:2 or 2:6) but it almost the same old story:
- we need power saving templates (here).
When applying a pm template will be as easy as push a button or select an option and bush a button, then we can improve the templates. Improving both in generalization (policies) and in customization (smartphone models).
If this would not be possible, it means that the SFOS abstraction layer from the underlying hardware is not good enough (from the PoV of a system administrator).
Anyway, I am not interested in continue to write in this thread because I collected enough information from here. 