Depends on the architecture you have in mind and the power modes.
In our case, we support two use cases:
a. WP module as master controlling the platform including the Mediatek MT7697. Note this part has WiFi/BT and the cortex M4. You can do real time I/O control on the cortex M4. WP itself can shut down the rest of the sytem. WP has a small cortex M0 built into but that part is not user programmable. Note that power consumption of the system can do down to 6ua (with mod) to 50ua(native) in lower power mode.
In summary, thiis is a powerful linux system with built in M0 for power optimization. the M4 is more for real time I/O capabilities as well WiFi/BT.
mangOH Red power optimization is done for the WP use case.
b. HL mode: MT7697 controls the HL module. The platform is not power optimized for this use case.