That only works on the flat stages. A small difference in power to weight ratio makes a huge difference in finishing times on the mountain stages where drafting is less of a factor.
Riders who finish in the same group are awarded the same time, with possible subtractions due to time bonuses. Two riders are said to have finished in the same group if the gap between them is less than three seconds. A crash or mechanical incident in the final 3 kilometres of a stage that finishes without a categorised climb usually means that riders thus affected are considered to have finished as part of the group they were with at the 3 km mark, so long as they finish the stage.
For this year's 5th stage of the Tour de France, the first 155 riders were assigned the same time.
I'm not sure their reflexes are better. It's more like they're the master of the feel and minutia of the airplane. They're also masters of managing the energy of their airplane, constantly trading off between altitude and speed. John Boyd was a fantastic example of that. There's a fascinating biography of him, "Boyd".
from https://en.wikipedia.org/wiki/General_classification:
For this year's 5th stage of the Tour de France, the first 155 riders were assigned the same time.see https://www.procyclingstats.com/race/tour-de-france/2024/sta...