"Shoot them over a chronograph and the Glock is the clear winner."
My guns and results don't indicate that clearly at all.........Below are the average of 5 shots....... 55 degF day.
Speer 9mm Gold Dot 124 +P JHP (as loaded by Speer)
Beretta 90two (~4.9" Barrel) 1225 fps - 415 ft/lbs ME
sigpro 2022 (~4" barrel) 1188 fps - 391 ft/lbs ME
I don't remember getting 1250 fps from the Speer load when I had my G17, but I've sold it and deleted the results from my spreadsheet. I know the polygonal rifling of the Glock 19 might add some fps over that of the sigpro, but only saw about 20 fps difference on most loads between my 90two and the G17, with the Glock being higher.
Anyway...................
Ruger SP101 (~3" barrel)
Speer 125 grain .357 mag Gold Dot JHP (as loaded by Speer) 1333 fps - 496 ft/lbs ME
Double Tap 125 grain .357 mag Gold Dot JHP 1366 fps - 521 ft/lbs ME
Remington 125 grain .357 mag SJHP - 1322 fps - 488 ft/lbs ME
and just for kicks (pun intended - feels like your hand is getting clubbed)...
Ruger .357 LCR (<2" barrel)
Speer 125 grain .357 mag Gold Dot JHP (as loaded by Speer) 1210 fps - 409 ft/lbs ME
Remington 125 grain .357 mag SJHP - 1245 fps - 432 ft/lbs ME
The fact that the .357 Remington load is hotter than the Speer out of the LCR and not as hot as the Speer out of the SP101 just goes to show how barrels, powders, ambient temperature, and other variables can skew this stuff.
To the original poster, I agree with the folks that favor capacity over horsepower if I KNEW I might have trouble, and couldn't carry a shotgun or rifle. I can reload my SP101 reasonably fast with speed strips, but I'd hate to do it if I still had an adversary (or more) shooting at me.