Don't know about all the tech-mumbo jumbo but I can tell you this.Take 2 motors about the same size,lets say a 70 size.One a two and the other a four stroke,put a 14 inch master air screw prop on both of them.Stand off to the side and pop the throutle back and fourth and watch the prop flex back and fourth on the four stroke.Then do the same on the 2 stroke.You will then understand what torque is.