Hi Jeff,
Don't forget Richard P. and Rick Kent were at their cruising speed,60-70% of of their full speed. We were at our RED zone speed and our 2nd run was their 4th or 5th run of the day.
Their internal parts are upgraded and finely tuned. GigaMike's leg may have special built in suspension automatically adjust to the terrain.
Let's not look at the summit,it will discourage you more that anything else. As long as my foot moves forward, I am very happy with that.