Terry is correct. As long as your gearing and crank length aren't ridiculous, only power:weight ratio really matters.
An overgeared rider with better W/kg can mash his way up a climb much faster than a less powerful rider with any crank length or gear ratio who is spinning beautifully.
Climbing is really much simpler than most people think. I've found that technique matters very little and one doesn't even have to do that much climbing to be good at it.