I watched that Cleve Fed video again and it does appear the number of revolutions is considerably more than on any of the smaller doors I have closed. That video I am guessing is from around the 1950's, so the door is not very old at that point and still in top condition. The fact he can get it spinning that fast would indicate everything is working very smoothly, and there is considerable gear reduction. With no door dragging on the jamb, the amount of required the move the door is shown by the two men moving the the door into position. What would that be? Several hundred pounds but not the several thousand pounds which the pressure system is more than capable of achieving.