logically the smaller body would feel the recoil less because the less mass of the shooter, the easier it is for their body to move.
the heavier shooter would not move as much from the recoil makeing him absorb way more of the energy. this is the reason you feel more kick when in prone vs standing. when standing the rifle only has to move the mass of your upper body, but when prone it is pushing against the length of your body or your whole mass instead of half. then comes into play how soft you are (fat vs muscle)
When hunting whitetails there are many different languages being spoken afield that I key on when outdoors. All these little creatures living around whitetails have something to tell us if we are willing to listen.
My favorite tattletales of the outdoors are a handful of little birds that live in my state of Ohio. Maybe yours too. A tip for the upcoming season.
There are Blue Jays, Cardinals, Chickadees, Killdeer, and Sparrows that all have language...