Pistols have never determined who won a war. In WWI, they were less than .1% of kills and wounded. Modern, more compact rifles are more useful than pistols. Rifles have more range, accuracy, and can better punch through modern armor. For some troops, it may be better to carry more rifle ammo than a pistol. Modern pistols are like modern smartphones, there isn’t a huge difference between brands and the chance that one company’s pistol saves your life when another company’s would not, is low.