The general answer to auto or manual is more defined by the car and intended use. An Auto consumes HP that a manual does not but it also multiplies torque with the converter that a manual does not offer. An auto does not miss shifts and is faster than the human interface. You can shift the lever of each pneumatically or let the auto shift per preset RPM or internal pressure points so ......
The auto can use a internal brake to preloaded the drive train and shock the tire harder for a better launch. Desert from dinner is ready so i am bailing on this but a lot more points on each side to be made still.