.380 ACP and .32 ACP? Stopping Power?
Since there is no concensus as to how to measure or express "stopping power", any comparison of a cartridge's "stopping power" to another is just debating in a vacuum.
Is the .380 better than the .32? Depends on what you hit, how determined your assailant is, and all sorts of other stuff.
Reminds me of the "How many licks to the center of a Tootsie-Roll lollipop? commercial- the world may never know.