My personal experience is that your statement would be true of a snubby J-frame revolver. I haven't used the pistols you mentioned but they are smaller and lighter than a J-frame so I have no doubt that they would be a joy to carry in a pocket. You say you are happy with the ballistics and I don't disagree -- but what about the reliability, have you also considered a snubby for similar or better ballistics plus greater reliability?
a pocket 380 is MUCH smaller and more pocketable than a j-frame. there is utterly no comparison in pocketability. my j-frame will not fit comfortably in the pocket of most of my pairs of jeans, and will not fit comfortably in the pocket of some of my pairs of shorts. my LCP will fit in anything.
i just don't get the dudes who think a j-frame is so pocketable. it's not. in fact, any pocket that will fit my j-frame will also fit my PF-9 or PT709.. and 8 shots of 9mm+p sure beats 5 shots of .38spl+p
with respect to greater reliability... my LCP has been flawless since day 1, no matter what ammo I have put through it. in an attempt to see if it will fail, i have given it mags of mixed ammo, tried different kinds of jhp's, limpwristed it badly, etc. not one failure yet. i trust it 100%.
as far as ballistics... well, yeah. .38spl+p beats the snot out of .380. can't argue with that. but you do get 2 more rounds with a pocket .380, and can reload the thing faster. also, if you're willing to put some buffalo bore through yours, you can close the ballistic gap considerably.
so, anyway, get out of here with your j-frame love
i have one, a beautiful 442. it sits in my safe. awful trigger, too big for only 5 rounds. probably the least favorite gun i own.