One of the criteria that some in the gun media as well as buyers use to judge a pistol is whether it digests a diverse array of ammunition. Brass case, steel case, multiple brands of FMJ, JHP maybe even flat-tops, JSP, hard cast and so on.
That’s a decent predictor of reliability, as a gun that reliably cycles lots of different kinds of ammunition will work well if you’re in a pinch and have to use a different brand or type than your usual stuff.