All depends on the load. A potent 9mm +P is about the same as the lowest power .357 Sig in ft/lbs at the muzzle. If you ask the LEOs of the land, many have ditched their 9mms for the the .357, though there may have been some politics in play in those cases. As usual, shot placement rules, and having fired both, the 9mm is easier for me to control having lower recoil and muzzle blast. I would not recommend a compact .357 Sig!