Not sure why people still not getting it. Fallen, Friis, Guardian, kennyS, and Delpan are all as fast, if not faster than markeloff. But the art of awping is not all about being fast. It's about being the most effective.
markeloff has been able to come out on top in most duels vs other top awpers because he is simply better with positioning (taking angles) and game reading equipped with his insane reflexes. Which made him the most consistent and deadliest awper in 1.6 and now he's going to do the same in CS:GO.
Consistent + brain = effective = deadly = markeloff