It blows my mind when I read posts which again and again refer to El G as the greatest middle-distance runner of all-time. He is surely the FASTEST 1500, Miler, 2K runner of all time, but the GREATEST? It could be argued that his predecessor, Morceli, has a greater claim to that throne. Also to be thrown into the pot are of course Coe, Ovett, Elliot et al.
Keep in mind I am not trying to open the debate as to who the greatest ever was. I'm just trying to create a distinction between GREATEST and FASTEST.