Yah, I saw the 700mA on the aileron and around 650mA peak on the rudder too.

I think the best way to determine what servo is actually needed to move a given control surface on a specific airplane at a given airspeed is to actually measure required mechanical force. Then take a typical control linkage that would be used and determine what the servo torque is required duplicate the necessary force using that linkage. There's a lot of factors involved.