Sprinting and Climbing are worlds apart . Sprinters are big guys with loads of power, they are built to unleash their speed over 100-500m. Climbers are (usually) small riders who specialize at holding a sustained pace up big climbs (and pushing big wattage up moutains), this also requires amazing cardio (i think that is the word, their heart muscles are amazing and are about 3x bigger than average). I guess it would be like comparing Usain Bolt to Craig Mottram. Long distance running requires a totally different set of attributes. Usually the long distance runners have less muscle and have more endurance. I'm sure there is someone with a more clear explanation though, hope this isnt confusing.