I haven't noticed a big difference in time for follow up shots between a pocket .380 and pocket 9mm.
Which ones have you shot and what was your method of measuring the difference?
There isn't a huge difference between a pocket 9mm and a pocket .380. However, there is a difference of multiple inches in penetration. It may not be huge, but I want every inch of advantage I can get.
I agree there is some advantage, I don't think that is really debatable, but Kodiak has hit on what I believe is one of the things likely to be a more significant factor in a defensive situation, namely followups and ability to run the gun. An inch of penatration might be a difference maker. So could speed of followups, so could being able to quickly clear a malfunction (the design of some guns makes certain clearances much more difficult and/or slower).
My point isn't that the 9mm is the wrong choice per se. Rather that people seem to have a myopic approach to evaluating the guns at issue and fail to really consider all the pertinent factors.
I haven't noticed a big difference in time for follow up shots between a pocket .380 and pocket 9mm. If anything I shoot a Keltec P-11 better than a Ruger LCP
The P11 is on the upper crust of "pocket gun" I think the critique is much more valid against weapons like the R9. A P11 is big enough that you get away from some of those issue and indeed it wouldn't surprise me if in these areas it has an advantage vis a vis a LCP/P3AT. Of the course one way to test this is take a shot timer out run various drills. If you look at guns that are roughly the same size and weight say a P238 and a R9 I think the P238 has notable advantages not outweighed by the slight advatanges of the 9mm chambering.
I am saying, despite what some people on the internet say, there is proof out there that a 3" 9mm does have a ballistic advantage over a 3" .380.
and in the same vein
Saying that the 9mm offers no advantage is dishonest and does not serve any one well.
No one is claiming that they would be silly to. If you think I wrote anything to that effect you may want to go reread my actual remarks. The argument is what I have outlined above. To wit, they are not the same but the advantage held by the 9mm is often not nearly as big as some people think. Further, the ballistics are not the only thing to worry about and depending on the gun and shooter in question may not offset the advantages held by a weapon in .380. A lot will come down to the particular guns one is comparing.