The .357 is a lot more powerful.
The main difference is the guns which use them tho technically there have been .357 autos and .45 ACP revolvers.
One of the finest guns I ever owned was a S&W model 27. It had an 8-3/8ths inch barrel, target trigger, grips and hammer. It truly was accurate.
On the other hand, the 1911 is a really good defense pistol. 8 or 9 rounds are adequate for most any situation and a fast reload if they aren’t.
SHTF not defense