As we watched the crossfit video in class basically on work and power, i realized that the guys who are relatively smaller in height are generally the guys who are the guys dead-lifting 350. The funny things is that there is a physics behind it. Being shorter gives a great advantage because they have to do less work. Work is equal to force times the displacement of that object. Since they are shorter they have less displacement which in turn leads to less amount of work needed to be done.
Here's a shorter guy.