Most of the time I have a G19 or P365. I shoot both of them well and I'm confident in both of them. The question of which one is mainly about how slim of a profile is needed for what I'm wearing that day. Reading numbers they may not seem that different...and in most cases either can still be concealed...but the P365 "feels" a lot smaller when carried. However, as another mentioned, I shoot it like a bigger gun....and I can't explain why.

Looking at it from Mackay's point of view, if I was planning on a gunfight, I'd probably go with the G19....but I wouldn't feel hindered with the P365.