A Question That's Been Answered

Caleb says he never understood the .357 Sig. He's not the only one.
I've heard it said that this bottlenecked cartridge was an attempt to replicate the ballistics of the .357 Magnum in an autoloading pistol. That makes sense and with, say, a 125-grain bullet at about 1350 fps it ain't too shabby. But still, why? This objective was already met with the 10mm, which as far as I can tell is a good bit more versatile than the .357 Sig. I guess the Sig would be good for smaller-framed pistols, but I can't help but wish the 10mm had been given more of a chance...