i assume the pic was taken like this to show the discrepancy. looks like a marathoner vs. a fullback:
http://www.letsrun.com/photos/2013/ncaa-indoor-friday/imagepages/image59.php
i've always been amazed by the range of body types that can be successful in the 400-1600 range of distances. Lalang & Botezan racing in the first mile prelim was quite the contrast as well with Lalang's twig legs vs. Botezan's stocky build.