Grey Morel - It might help you to understand if you followed the progression of the thought in it’s entirety.
First Gryffydd questioned Confederate’s statement, “The .41 mag, in my view, doesn't have the stopping power that the .357 does, plus it has greater recoil and penetration (which is why it's not as good a manstopper).” by posing this question, “I'm not sure I read this right, because it sounds like you're saying that the .41 Magnum has less stopping power because it's much more powerful.”
My response to Gryffydd's statement was to first agree with him [ “As a firearm and reloading enthusiast your supposition certainly makes sense to me”. ]
Then my experience indicated, possibly anecdotally, that the opposite may be true that the 357Mag may have been more of a manstopper than the .41Mag for other than the basic laws of kinetic energy involved; i.e., possibly bullet design in the homicide cases involving those bullets.
There may be better man stopping bullets in .41Mag & .44Mag now, but they were questionable in those cases during my tenure in the police department from 1971 to 1983.