This is from the FBI handgun wounding factors and effectiveness report.
"Physiologically, a determined adversary can be stopped reliably and immediately only by a shot that disrupts the brain or upper spinal cord. Failing a hit to the central nervous system, massive bleeding from holes in the heart or major blood vessels of the torso causing circulatory collapse is the only other way to force incapacitation upon an adversary, and this takes time. For example, there is sufficient oxygen within the brain to support full, voluntary action for 10-15 seconds after the heart has been destroyed."
Bigger Bullet=Bigger hole= bleed out quicker.
Thats just a fact of life.I'll take that extra 2.5mm. it may be all thats needed to nick a Artery or clip the heart.
If you're having issues with recoil and bullet size is not important to you,you should be using a .22lr/ 5mm Vs.9mm. its only 4mm,not a big difference,by your logic,it's a No brainer.
The 1911 also has one of the most fogiving triggers of any auto out of the box ,better trigger, better shot placement. and you should know that.