He may not be the GOAT but he is responsible for the trend of racing rather than editing the marathon. He had 14:11 as a 5k split in his London win and as far as I know that has only been bettered by Kimetto so far. Wanjiru may not have been able to run 2:02 but he was EXCITING as you said. Destroying Kebede in Chicago was historic considering his manager didn't even consider him to be in shape.