Shooting another creature takes focus. I think semi automatic pistols bred a 'spray and pray' mentality. Its the reason so many bystanders are injured during shootings.
To be clear, I carry a Sig 938, but I don't view it as superior to a single action. Coolness under fire and shot placement mean infinitely more than magazine capacity.
Now, I want to take back a bit of the above. A Sig 938 is superior in one regard. It doesn't feel like you are carrying a barbell on your hip.