70SS454LS6

I've read many detailed descriptions of how the 5MT works, 90%-10% front to rear normal torque distribution, 50%-50% torque distribution with max front slip, viscous coupling, strictly mechanical, no electronics.
But I've yet to read a similar description of how the 4EAT works. What is normal 4EAT torque distribution and max torque distribution? Is it like 5MT, also 90%-10% and 50%-50%? What do the electronics do to control the 4EAT box or clutch pack? What are the mechanical elements of the 4EAT box and how do these element interact to transfer torque front and rear?
And the key question, which box is better, 5MT or 4EAT, for street driving in all weather conditions, dry, rain, snow?
I'd appreciate your posting URLs that describe the workings of the 4EAT.
Thank you.