In footlocking the difference is just an average good climber vs a world record holder.. When someone breaks 10 seconds, he'll make history...
I used to always wonder how my climbing teacher could be so fast... he didn't really seem to be doing anything extraordinary, yet he'd get monster trees on the ground or pruned amazingly quickly... He had honed every aspect of climbing, rigging and cutting, to eliminate any wasted time. Every part of his game was done with mastery, not rushing, but the kind of fast that comes from smooth and methodical fluidity. The groundlmen didn't wait for him, he waited for them.
Though I could never hope to match his athleticism and climbing skills, I did take the lesson to heart and learned to apply it to the one area where I could, cutting.....
So I worked for years at learning to handle the saw with maximum efficiency, eliminating any wasted movement or time. Polishing the skills on the ground, so I could trust my life with them when used aloft. And it paid off... I suppose a lot of that has to do with topography.. I work in a market where there is often room to drop a tree in a tight drop zone if you have the skill and confidence. Most around here don't, so its a competitive advantage... that's my bread and butter.
Back to the point... its amazing to me how arborists spend so much time and $ improving their climbing techniques, yet so little time focusing on saw handling.. Saw handling is a big part of the game, and learning to shave seconds off every cut really adds up.. And more importantly, good cutting skills often preclude the need to climb and rig, taking the entire crew out of potentially dangerous situations.
That said, the next time any of you are making a cut on a horizontal limb over 20" diameter, put a clock on it and let us know... 23 seconds is the unofficial world record... LOL